a-21=34

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Solution for a-21=34 equation: 


Simplifying
a + -21 = 34

Reorder the terms:
-21 + a = 34

Solving
-21 + a = 34

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + a = 34 + 21

Combine like terms: -21 + 21 = 0
0 + a = 34 + 21
a = 34 + 21

Combine like terms: 34 + 21 = 55
a = 55

Simplifying
a = 55

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