Question

how did we got x-y=2 by substituting this equation -8x+8y=-16​

Answer 1

Hey mate ☺

$- 8x + 8y = - 16 \\ - 8(x - y) = - 16 \\ x - y = \frac{ - 16}{ - 8} \\ x - y = 2$

Hope you understand ☺✌✌

Answer 2

-8x + 8y = -16

-8(x - y) = -16

x - y = -16÷-8

x - y = 2

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