-13=-a

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Solution for -13=-a equation:


Simplifying
-13 = -1a

Solving
-13 = -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-13 + a = -1a + a

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

Add '13' to each side of the equation.
-13 + 13 + a = 0 + 13

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

Combine like terms: 0 + 13 = 13
a = 13

Simplifying
a = 13

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