-2a+(-1)=-13

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Solution for -2a+(-1)=-13 equation: 


Simplifying
-2a + (-1) = -13
-2a + -1 = -13

Reorder the terms:
-1 + -2a = -13

Solving
-1 + -2a = -13

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 + -2a = -13 + 1

Combine like terms: -1 + 1 = 0
0 + -2a = -13 + 1
-2a = -13 + 1

Combine like terms: -13 + 1 = -12
-2a = -12

Divide each side by '-2'.
a = 6

Simplifying
a = 6

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