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

This Question is Closed

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

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

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

beketso
 one year ago
Best ResponseYou've already chosen the best response.12 4 3  6 3 5 6  3 2 3 4  8 subtract row 1 from row 3 and tell me what u get

aspenfields
 one year ago
Best ResponseYou've already chosen the best response.10 1 1 2 is that right?

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

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

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

aspenfields
 one year ago
Best ResponseYou've already chosen the best response.12/3 4/5 1/2 2 right?

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

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

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

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

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

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

beketso
 one year ago
Best ResponseYou've already chosen the best response.11 2 3/2  3 _ _ _  _ 0 1 1  2 the only r0w that changes is row 2

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

beketso
 one year ago
Best ResponseYou've already chosen the best response.13(3X3) = 0 That is how u do it.

beketso
 one year ago
Best ResponseYou've already chosen the best response.1meaning 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

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

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

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

beketso
 one year ago
Best ResponseYou've already chosen the best response.11 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.

beketso
 one year ago
Best ResponseYou've already chosen the best response.1add 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

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

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

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

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

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

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

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

beketso
 one year ago
Best ResponseYou've already chosen the best response.1then 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?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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