a+18=13

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Solution for a+18=13 equation: 


Simplifying
a + 18 = 13

Reorder the terms:
18 + a = 13

Solving
18 + a = 13

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + a = 13 + -18

Combine like terms: 18 + -18 = 0
0 + a = 13 + -18
a = 13 + -18

Combine like terms: 13 + -18 = -5
a = -5

Simplifying
a = -5

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