NashNugs
Solve the System of equations
3x + 3y + 2z = –5
x + y + 3z = –4
2x + 2y + 5z = –7



This Question is Closed

goformit100
Best Response
You've already chosen the best response.
0
dw:1343833778651:dw

mathslover
Best Response
You've already chosen the best response.
3
ok so first of all :
3x+3y+2z=5
3x + 3y = 52z
3(x+y)=52z
x+y = (52z)

3
x = (52z)/3  y

mathslover
Best Response
You've already chosen the best response.
3
put this value in the above equations

annas
Best Response
You've already chosen the best response.
1
@mathslover my bro you're the best

NashNugs
Best Response
You've already chosen the best response.
0
whats the graph? The dud who drew the pic? Whats that

mathslover
Best Response
You've already chosen the best response.
3
it is fully dependent on you "which method you want to chose"
thanks @annas , there may be mistake as no one is perfect in any field

NashNugs
Best Response
You've already chosen the best response.
0
@mathslover i have no idea what that was haha

NashNugs
Best Response
You've already chosen the best response.
0
i think substitution would work best

annas
Best Response
You've already chosen the best response.
1
you can also use matrix method

NashNugs
Best Response
You've already chosen the best response.
0
? whats that?

mathslover
Best Response
You've already chosen the best response.
3
@NashNugs seems that you are working on substitution at present so go through that
IF you have studied matrices then use the @goformit100 's method

annas
Best Response
You've already chosen the best response.
1
3 3 2 5
1 1 3 4
2 2 5 7
make the row echelon form and you'll get your answers

NashNugs
Best Response
You've already chosen the best response.
0
i have not studies the matrix method. But i found the answer with substitution.

annas
Best Response
You've already chosen the best response.
1
ok it was just for your knowledge :)

mathslover
Best Response
You've already chosen the best response.
3
good then

NashNugs
Best Response
You've already chosen the best response.
0
would the answer be 4,3,1?

NashNugs
Best Response
You've already chosen the best response.
0
thats what i got, i might have done something wrong tho

NashNugs
Best Response
You've already chosen the best response.
0
is that what you got?

NashNugs
Best Response
You've already chosen the best response.
0
@mathslover

mathslover
Best Response
You've already chosen the best response.
3
yes it seems right to me