15+y=2y-7

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Solution for 15+y=2y-7 equation:


Simplifying
15 + y = 2y + -7

Reorder the terms:
15 + y = -7 + 2y

Solving
15 + y = -7 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
15 + y + -2y = -7 + 2y + -2y

Combine like terms: y + -2y = -1y
15 + -1y = -7 + 2y + -2y

Combine like terms: 2y + -2y = 0
15 + -1y = -7 + 0
15 + -1y = -7

Add '-15' to each side of the equation.
15 + -15 + -1y = -7 + -15

Combine like terms: 15 + -15 = 0
0 + -1y = -7 + -15
-1y = -7 + -15

Combine like terms: -7 + -15 = -22
-1y = -22

Divide each side by '-1'.
y = 22

Simplifying
y = 22

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