The answer is on the picture below
<span>3y+2x=6
5y-2x=10
--------------add
8y = 16
y = 2
</span>3y+2x=6
3(2)+2x=6
6 + 2x = 6
2x = 0
x = 0
answer: x = 0 and y = 2 or (0,2)
15/5 is 3
So then you change the equation to be 12=15z-3 ( don’t forgot the negative sign)
Move the constant to the right side and change the sign
-15z= -3 -12
-3-12 is -15
Divide -15z= -15
Your final answer will be z= 1
