Answer:
X = -39
G = -9/6 or -1 1/2
Y = -24
Step-by-step explanation:
For the first one, let’s multiply all the terms by -3 so isolate x. We will end up with:
X + 21 = -18
Next subtract 21 on each side to get:
X = -39
Moving on to the second one, lets add 3 on each side
6g = -9
Then divide by 6
G = -9/6 or -1 1/2
Finally, for number 3, lets multiply by -2 to isolate y
Y + 8 =-16
Subtract 8 on each side
Y = -24
