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

1. goformit100

|dw:1343833778651:dw|

2. mathslover

ok so first of all : 3x+3y+2z=-5 3x + 3y = -5-2z 3(x+y)=-5-2z x+y = (-5-2z) ------- 3 x = (-5-2z)/3 - y

3. mathslover

put this value in the above equations

4. annas

@mathslover my bro you're the best

5. NashNugs

whats the graph? The dud who drew the pic? Whats that

6. mathslover

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

7. NashNugs

@mathslover i have no idea what that was haha

8. NashNugs

i think substitution would work best

9. annas

you can also use matrix method

10. NashNugs

? whats that?

11. mathslover

@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

12. annas

|3 3 2| -5| |1 1 3| -4| |2 2 5| -7| make the row echelon form and you'll get your answers

13. NashNugs

i have not studies the matrix method. But i found the answer with substitution.

14. annas

ok it was just for your knowledge :)

15. mathslover

good then

16. NashNugs

17. NashNugs

thats what i got, i might have done something wrong tho

18. NashNugs

is that what you got?

19. NashNugs

@mathslover

20. mathslover

yes it seems right to me