21a-3a+2a=20

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Solution for 21a-3a+2a=20 equation: 


Simplifying
21a + -3a + 2a = 20

Combine like terms: 21a + -3a = 18a
18a + 2a = 20

Combine like terms: 18a + 2a = 20a
20a = 20

Solving
20a = 20

Solving for variable 'a'.

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

Divide each side by '20'.
a = 1

Simplifying
a = 1

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