Question

solve by substitution:2x+y=7 and 3x-2y=-7 fast friends​

Answer 1

Answer.

∴ x = 1, y = 2

Step-by-step explanation:

3x+2y=7.

4x+y=6⇒y=6−4x

placing in equation (1)

3x+2(6−4x)=7

3x+12−8x=7⇒−5x+12=7

−5x=7−12⇒−5x=−5

x=1

∴ y = 6 - 4×1=2

∴ x = 1, y = 2