Batchsuper866viz
Answered

Solve the following by substitution:
x – y = 7
y = 2x - 11

Sagot :

Mlcparra16viz
Since y = 2x - 11,
x - y = 7
x - 2x + 11 = 7
-x = -4
x = 4

So:
y = 2(4) - 11
y = 8 - 11
y = -3