To solve this by using substitution, we have to replace the 2nd equations X with the first
*-2(Y-4)+3Y=6, then we distribute!
*-2Y+8+3Y=6, after that we combine like terms!
*-2Y+3Y+8=6 > Y+8=6, Finally we subtract from both sides!
*Y+8-8=6-8, Which gives us y=-2 as our answer!
Second part!
After that we plug in Y=-2 into the 2ND equation and we solve accordingly!
*-2X+3(-2)=6 >-2X-6=6 > -2X=12
Finally dividing both sides by -2 we get:
X=-6 And Y=-2 as our answers