-21a+16a=a

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Solution for -21a+16a=a equation: 


Simplifying
-21a + 16a = a

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

Solving
-5a = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-5a + -1a = a + -1a

Combine like terms: -5a + -1a = -6a
-6a = a + -1a

Combine like terms: a + -1a = 0
-6a = 0

Divide each side by '-6'.
a = 0

Simplifying
a = 0

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