y+-15=21

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Solution for y+-15=21 equation: 


Simplifying
y + -15 = 21

Reorder the terms:
-15 + y = 21

Solving
-15 + y = 21

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + y = 21 + 15

Combine like terms: -15 + 15 = 0
0 + y = 21 + 15
y = 21 + 15

Combine like terms: 21 + 15 = 36
y = 36

Simplifying
y = 36

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