a-18=20

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Solution for a-18=20 equation: 


Simplifying
a + -18 = 20

Reorder the terms:
-18 + a = 20

Solving
-18 + a = 20

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 = 20 + 18

Combine like terms: -18 + 18 = 0
0 + a = 20 + 18
a = 20 + 18

Combine like terms: 20 + 18 = 38
a = 38

Simplifying
a = 38

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