Question

x - y = 7 3x - y = 1​

Answer 1

Here is your answer

$x - y = 7$

$\implies \: y = x - 7$

$\green{substitute} \: \blue{this} \: \red{in} \: \pink{second} \: \orange{equation}$

$3x - (x - 7) = 1$

$\implies \: 3x - x + 7 = 1$

$\implies \: 2x + 7 = 1$

$\implies \: 2x = - 6$

$\therefore \: \boxed {x = - 3}$

We know that

$y = x - 7$

$y = - 3 - 7$

$\therefore \: \boxed{y = - 10}$

Hope it helps you

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