3(2x+7y)=42

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Solution for 3(2x+7y)=42 equation: 


Simplifying
3(2x + 7y) = 42
(2x * 3 + 7y * 3) = 42
(6x + 21y) = 42

Solving
6x + 21y = 42

Solving for variable 'x'.

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

Add '-21y' to each side of the equation.
6x + 21y + -21y = 42 + -21y

Combine like terms: 21y + -21y = 0
6x + 0 = 42 + -21y
6x = 42 + -21y

Divide each side by '6'.
x = 7 + -3.5y

Simplifying
x = 7 + -3.5y

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