Question

$12y = 7y - 15$
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Answer 1

12y = 7y - 15

subtract 7y from the equation,

12y - 7y = 7y - 7y - 15

5y = -15

Divide the equation by 5,

5y/5 = -15/5

y = - 3

Hence, for the given equation, y is equal to -3.

Answer 2

$\sf 12y = 7y -15 \\\\\ \implies {\sf{12y - 7y =-15}} \\\\\ \implies{\sf{ 5y = -15 }} \\\\\ \implies {\sf{y = \frac {-15}{5}}} \\\\\ \implies {\bold{ y = -3}}$