a+80=100

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Solution for a+80=100 equation: 


Simplifying
a + 80 = 100

Reorder the terms:
80 + a = 100

Solving
80 + a = 100

Solving for variable 'a'.

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

Add '-80' to each side of the equation.
80 + -80 + a = 100 + -80

Combine like terms: 80 + -80 = 0
0 + a = 100 + -80
a = 100 + -80

Combine like terms: 100 + -80 = 20
a = 20

Simplifying
a = 20

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