13+a=-10

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Solution for 13+a=-10 equation: 


Simplifying
13 + a = -10

Solving
13 + a = -10

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 = -10 + -13

Combine like terms: 13 + -13 = 0
0 + a = -10 + -13
a = -10 + -13

Combine like terms: -10 + -13 = -23
a = -23

Simplifying
a = -23

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