-9a-13=-103

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Solution for -9a-13=-103 equation: 


Simplifying
-9a + -13 = -103

Reorder the terms:
-13 + -9a = -103

Solving
-13 + -9a = -103

Solving for variable 'a'.

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

Add '13' to each side of the equation.
-13 + 13 + -9a = -103 + 13

Combine like terms: -13 + 13 = 0
0 + -9a = -103 + 13
-9a = -103 + 13

Combine like terms: -103 + 13 = -90
-9a = -90

Divide each side by '-9'.
a = 10

Simplifying
a = 10

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