-15+a=-40

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Solution for -15+a=-40 equation: 


Simplifying
-15 + a = -40

Solving
-15 + a = -40

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + a = -40 + 15

Combine like terms: -15 + 15 = 0
0 + a = -40 + 15
a = -40 + 15

Combine like terms: -40 + 15 = -25
a = -25

Simplifying
a = -25

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