16-12-13a=-9

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Solution for 16-12-13a=-9 equation: 


Simplifying
16 + -12 + -13a = -9

Combine like terms: 16 + -12 = 4
4 + -13a = -9

Solving
4 + -13a = -9

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + -13a = -9 + -4

Combine like terms: 4 + -4 = 0
0 + -13a = -9 + -4
-13a = -9 + -4

Combine like terms: -9 + -4 = -13
-13a = -13

Divide each side by '-13'.
a = 1

Simplifying
a = 1

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