Question

solve the following pairs of linear equations by method of substitution
plz answer don't delete question
1.
$x + y = 7$
$5x + 12y = 7$
2.
$5x - 3y = 1$
$2x + 5y = 19$
3.
$2x - y + 3 = 0$
$y = 2x - \frac{3}{2}$

Answer 1

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