Answer:
y=-4, x=-3
Step-by-step explanation:
1. Find x in terms of y
x-6y=21
x=21+6y
2. Substitute the x value for the y equivalent of x times the coefficient (6)
6(21+6y)+2y=-26
3. Distribute and simplify
126+36y+2y=-26
126+38y=-26
-152=38y
y=-4
3. Find x using the y value. Substitute y with -4
x-6(-4)=21
x+24=21
x=-3
