86+a=99

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Solution for 86+a=99 equation: 


Simplifying
86 + a = 99

Solving
86 + a = 99

Solving for variable 'a'.

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

Add '-86' to each side of the equation.
86 + -86 + a = 99 + -86

Combine like terms: 86 + -86 = 0
0 + a = 99 + -86
a = 99 + -86

Combine like terms: 99 + -86 = 13
a = 13

Simplifying
a = 13

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