3a+4x=12

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Solution for 3a+4x=12 equation: 


Simplifying
3a + 4x = 12

Solving
3a + 4x = 12

Solving for variable 'a'.

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

Add '-4x' to each side of the equation.
3a + 4x + -4x = 12 + -4x

Combine like terms: 4x + -4x = 0
3a + 0 = 12 + -4x
3a = 12 + -4x

Divide each side by '3'.
a = 4 + -1.333333333x

Simplifying
a = 4 + -1.333333333x

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