4(3x-y)=40

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Solution for 4(3x-y)=40 equation: 


Simplifying
4(3x + -1y) = 40
(3x * 4 + -1y * 4) = 40
(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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