Question

Solve 9x-2y = 15 for y.

y= ?
(Use integers or fractions for any numbers in the expression.)

Answer 1

`\frac92x - \frac{15}2 = y`

Explanation:

`9x - 2y = 15 \text{ / Add 2y} \\9x - 2y + 2y = 15 + 2y \\\to 9x = 15 + 2y \text{ / Subtract 15} \\9x - 15 = 15 + 2y - 15 \\\to 9x - 15 = 2y \text{ / Divide by 2} \\\frac{9x - 15}2 = \frac{2y}2 \\ \\\frac92x - \frac{15}2 = y`