3x-7y=-28y

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Solution for 3x-7y=-28y equation: 


Simplifying
3x + -7y = -28y

Solving
3x + -7y = -28y

Solving for variable 'x'.

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

Add '7y' to each side of the equation.
3x + -7y + 7y = -28y + 7y

Combine like terms: -7y + 7y = 0
3x + 0 = -28y + 7y
3x = -28y + 7y

Combine like terms: -28y + 7y = -21y
3x = -21y

Divide each side by '3'.
x = -7y

Simplifying
x = -7y

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