5a-3a=18

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Solution for 5a-3a=18 equation: 


Simplifying
5a + -3a = 18

Combine like terms: 5a + -3a = 2a
2a = 18

Solving
2a = 18

Solving for variable 'a'.

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

Divide each side by '2'.
a = 9

Simplifying
a = 9

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