-1-a=-9

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Solution for -1-a=-9 equation:


Simplifying
-1 + -1a = -9

Solving
-1 + -1a = -9

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + -1a = -9 + 1

Combine like terms: -1 + 1 = 0
0 + -1a = -9 + 1
-1a = -9 + 1

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

Divide each side by '-1'.
a = 8

Simplifying
a = 8

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