Question

2x - 4y = 20
x/3 - y= 3
Solve by using substitution​​

Answer 1

Explanation:

2x-4y=20

y=-3+x/3

2x-4(-3+x/3)=20 ⇒ 2x+12-4x/3=20 ⇒ 2x/3+12=20 ⇒ 2x/3=8

x=12

y=1

2(12)-4(1)=20