15+7y=8(y-1)

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Solution for 15+7y=8(y-1) equation:


Simplifying
15 + 7y = 8(y + -1)

Reorder the terms:
15 + 7y = 8(-1 + y)
15 + 7y = (-1 * 8 + y * 8)
15 + 7y = (-8 + 8y)

Solving
15 + 7y = -8 + 8y

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-8y' to each side of the equation.
15 + 7y + -8y = -8 + 8y + -8y

Combine like terms: 7y + -8y = -1y
15 + -1y = -8 + 8y + -8y

Combine like terms: 8y + -8y = 0
15 + -1y = -8 + 0
15 + -1y = -8

Add '-15' to each side of the equation.
15 + -15 + -1y = -8 + -15

Combine like terms: 15 + -15 = 0
0 + -1y = -8 + -15
-1y = -8 + -15

Combine like terms: -8 + -15 = -23
-1y = -23

Divide each side by '-1'.
y = 23

Simplifying
y = 23

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