-1a-3=-1

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Solution for -1a-3=-1 equation: 


Simplifying
-1a + -3 = -1

Reorder the terms:
-3 + -1a = -1

Solving
-3 + -1a = -1

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + -1a = -1 + 3

Combine like terms: -3 + 3 = 0
0 + -1a = -1 + 3
-1a = -1 + 3

Combine like terms: -1 + 3 = 2
-1a = 2

Divide each side by '-1'.
a = -2

Simplifying
a = -2

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