a-27=21

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Solution for a-27=21 equation: 


Simplifying
a + -27 = 21

Reorder the terms:
-27 + a = 21

Solving
-27 + a = 21

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 27 + a = 21 + 27

Combine like terms: -27 + 27 = 0
0 + a = 21 + 27
a = 21 + 27

Combine like terms: 21 + 27 = 48
a = 48

Simplifying
a = 48

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