a-8=-1

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Solution for a-8=-1 equation: 


Simplifying
a + -8 = -1

Reorder the terms:
-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 = 7
a = 7

Simplifying
a = 7

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