3a-x=42

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Solution for 3a-x=42 equation: 


Simplifying
3a + -1x = 42

Solving
3a + -1x = 42

Solving for variable 'a'.

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

Add 'x' to each side of the equation.
3a + -1x + x = 42 + x

Combine like terms: -1x + x = 0
3a + 0 = 42 + x
3a = 42 + x

Divide each side by '3'.
a = 14 + 0.3333333333x

Simplifying
a = 14 + 0.3333333333x

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