Question

Solve the system by substitution:
y=9x-12
y=3x

Answer 1

5/3

Explanation:

3=9x-12

9x-12=3

9x-12+12=3+12

9x=15

9x/9=15/9

x=5/3

Answer 2

(2,6)

x = 2, y = 6