18a-4a=42

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Solution for 18a-4a=42 equation: 


Simplifying
18a + -4a = 42

Combine like terms: 18a + -4a = 14a
14a = 42

Solving
14a = 42

Solving for variable 'a'.

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

Divide each side by '14'.
a = 3

Simplifying
a = 3

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