5a-1a=9a

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Solution for 5a-1a=9a equation: 


Simplifying
5a + -1a = 9a

Combine like terms: 5a + -1a = 4a
4a = 9a

Solving
4a = 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
4a + -9a = 9a + -9a

Combine like terms: 4a + -9a = -5a
-5a = 9a + -9a

Combine like terms: 9a + -9a = 0
-5a = 0

Divide each side by '-5'.
a = 0

Simplifying
a = 0

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