Question

$3x - y = 5 \\ 2x = 3(y + 5)$
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Answer 1

3x - y = 5 equation 1 * 2

2x = 3y + 15 *3

so,

6x - 2y = 10

6x - 9y = 45

7y = -35

y = -5

putting the value ,

3x - y = 5

3x + 5 = 5

x = 0