12a+3b=84

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Solution for 12a+3b=84 equation: 


Simplifying
12a + 3b = 84

Solving
12a + 3b = 84

Solving for variable 'a'.

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

Add '-3b' to each side of the equation.
12a + 3b + -3b = 84 + -3b

Combine like terms: 3b + -3b = 0
12a + 0 = 84 + -3b
12a = 84 + -3b

Divide each side by '12'.
a = 7 + -0.25b

Simplifying
a = 7 + -0.25b

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