13+a=11

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Solution for 13+a=11 equation: 


Simplifying
13 + a = 11

Solving
13 + a = 11

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 + a = 11 + -13

Combine like terms: 13 + -13 = 0
0 + a = 11 + -13
a = 11 + -13

Combine like terms: 11 + -13 = -2
a = -2

Simplifying
a = -2

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