2y+15=y+8

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Solution for 2y+15=y+8 equation: 


Simplifying
2y + 15 = y + 8

Reorder the terms:
15 + 2y = y + 8

Reorder the terms:
15 + 2y = 8 + y

Solving
15 + 2y = 8 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
15 + 2y + -1y = 8 + y + -1y

Combine like terms: 2y + -1y = 1y
15 + 1y = 8 + y + -1y

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

Divide each side by '1'.
y = -7

Simplifying
y = -7

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