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how do i solve the system of equations?
2x + 4y + 3z = 6
3x + 5y + 6z =3
2x + 3y + 4z = 8
 one year ago
 one year ago
how do i solve the system of equations? 2x + 4y + 3z = 6 3x + 5y + 6z =3 2x + 3y + 4z = 8
 one year ago
 one year ago

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beketsoBest ResponseYou've already chosen the best response.1
are you familiar with matrices
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
well you can use the gaussian elimination
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
meaning you use the elementary row operations
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
2 4 3  6 3 5 6  3 2 3 4  8 subtract row 1 from row 3 and tell me what u get
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
0 1 1 2 is that right?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
yeah.now divide row 1 by 2
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
ok the answer i have above isnt row one is it or is row one in the problem still?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
no.it is still row 3.row one is ur original problem 2 4 3  6
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
2/3 4/5 1/2 2 right?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
it is actually 1 2 3/2  3 get it?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
well u take the first row.and u divide by 2.then it changes from 2 4 3 6 to 1 2 3/2  3
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
ohh! u divid by two not thr 2nd row :/lol now i got that ok
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then your rows are now like this 1 2 3/2  3 3 5 6  3 0 1 1  2
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
sorry. multipy row 1 by 3 the subtract it from row 2 the u have a reduced row 2
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
when i subtract which number should be on top?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
1 2 3/2  3 _ _ _  _ 0 1 1  2 the only r0w that changes is row 2
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
yea,ok i get that so row to is now 3 8 9/2 3
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
3(3X3) = 0 That is how u do it.
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
meaning u take 1 from row1 and multiply by 3 the u subtract the answer from 3 in row 2 and u get ur as 0. do the same with the second term
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then u get 1 2 3/2  3 0 1 3/2  6 0 1 1  2
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
ok then from there what do i do next ?
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
ok is this the answer or is the more?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
1 2 3/2  3 0 1 3/2  6 0 1 1 2 in row 1 u must eliminate 2 and in row 3 must eliminate 1.
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
add row 3 and row 2 to get 1 2 3/2 3 0 1 3/2 6 0 0 1/2 4 and u jst eliminated 1 from row 3
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
sorry u jst eliminated 1 from row 3
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then now we eliminate 2 from row 1
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
i figured u ment that
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then u get 1 0 9/2 9 0 1 3/2  6 0 0 1/2 4
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
basically u want to get to a point were u have 1 0 0  ? 0 1 0  ? 0 0 1  ?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
now divide row 3 by 1/2 (half)
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
what is 4 divided by half
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then u have 1 0 9/2  9 0 1 3/2  6 0 0 1  8 what do u think u should do to eliminate 9/2?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
remember you want it to be 0
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
on then subtract 9/2?
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
what bout the numbers on the end?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
so mentally multiply row 3 by 9/2
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
and then subtract it from row 1
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
what do u get for row1?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
now u got 1 0 0  27 0 1 3/2 6 0 0 1 8
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
u must now eliminate 3/2.how do u think u do that?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
how do you think u can do it?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
sure.which row can u use to eliminate it?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
good.how do u do that?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
multiply row3 by 3/2 and add it to row2
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
that way 1 becomes 3/2 and you can add that to row 2.the 3/2 + 3/2 = 0 which eliminates 3/2
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
then u have 1 0 0 27 0 1 0 6 0 0 1 8 what is ur x,y and z?
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
but i think i made a mistake with the numbers somewhere
 one year ago

beketsoBest ResponseYou've already chosen the best response.1
should i paste the whole solution or can u figure out the mistake?
 one year ago

aspenfieldsBest ResponseYou've already chosen the best response.1
i can figure it out now
 one year ago
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