-8+-2a=15

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Solution for -8+-2a=15 equation: 


Simplifying
-8 + -2a = 15

Solving
-8 + -2a = 15

Solving for variable 'a'.

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

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

Combine like terms: -8 + 8 = 0
0 + -2a = 15 + 8
-2a = 15 + 8

Combine like terms: 15 + 8 = 23
-2a = 23

Divide each side by '-2'.
a = -11.5

Simplifying
a = -11.5

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