8+a=-1

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Solution for 8+a=-1 equation: 


Simplifying
8 + a = -1

Solving
8 + a = -1

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 + a = -1 + -8

Combine like terms: 8 + -8 = 0
0 + a = -1 + -8
a = -1 + -8

Combine like terms: -1 + -8 = -9
a = -9

Simplifying
a = -9

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