Question

Solve by using elimination
-2x+2y+3z=0
-2x-y+z=-3
2x+3y+3z=5

Solve by using substitution
-x-y-z=-8
-4x+4y+5z=7
2x+2z=4

Answer 1

for elimination on just subtract the first two equations..... x gets eliminated ......
then proceed

Answer 2

@Rwelch ??

Answer 3

well i tried that but i had gotten the answer wrong but teacher didnt tell me how to fix it

Answer 4

after doing the manipulation i told u will get an equation in y and z
3y + 2z = 3
then add second and third equation...x gets weliminated..and u get another equation in y and z

Answer 5

um what
?

Answer 6

see the first equation is -2x+2y+3z=0
second equation is -2x-y+z=-3
third equation is 2x+3y+3z=5
now simply add equation 1 and 3 x gets eliminated
and again add equation 1 and 3 x gets eliminated...
u will hav two equation in y and z
then get values of y and z ang plug them in any of the given three equation

Answer 7

nope still not understanding

Answer 8

oops my bad