a+16=21

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Solution for a+16=21 equation: 


Simplifying
a + 16 = 21

Reorder the terms:
16 + a = 21

Solving
16 + a = 21

Solving for variable 'a'.

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

Add '-16' to each side of the equation.
16 + -16 + a = 21 + -16

Combine like terms: 16 + -16 = 0
0 + a = 21 + -16
a = 21 + -16

Combine like terms: 21 + -16 = 5
a = 5

Simplifying
a = 5

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