Question

X-2Y=-1
3X+2Y=5
2X-4Y+Z=-1 SOLVE BY ADDITION

Answer 1

CAN U PLEASE SHOW WORK?

Answer 2

nvm

Answer 3

?

Answer 4

Start by adding the first two equations together... notice the -2y in the first and 2y in the second will cancel.

Answer 5

right...and i got x=1

Answer 6

Add first two together you get 4x=4
X=1 put this value first equation you get 1-2y=-1
Y=1 put these two values of x,y to #3 equaltion you get 2-4+z=-1
Z=1

Answer 7

thnks

Answer 8

Glad to help... looks like you almost had it on your own :)