13-a=-9

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Solution for 13-a=-9 equation:


Simplifying
13 + -1a = -9

Solving
13 + -1a = -9

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 + -1a = -9 + -13

Combine like terms: 13 + -13 = 0
0 + -1a = -9 + -13
-1a = -9 + -13

Combine like terms: -9 + -13 = -22
-1a = -22

Divide each side by '-1'.
a = 22

Simplifying
a = 22

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