12x+4y=40

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Solution for 12x+4y=40 equation: 


Simplifying
12x + 4y = 40

Solving
12x + 4y = 40

Solving for variable 'x'.

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

Add '-4y' to each side of the equation.
12x + 4y + -4y = 40 + -4y

Combine like terms: 4y + -4y = 0
12x + 0 = 40 + -4y
12x = 40 + -4y

Divide each side by '12'.
x = 3.333333333 + -0.3333333333y

Simplifying
x = 3.333333333 + -0.3333333333y

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