3x-7y=28

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Solution for 3x-7y=28 equation: 


Simplifying
3x + -7y = 28

Solving
3x + -7y = 28

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 = 28 + 7y

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

Divide each side by '3'.
x = 9.333333333 + 2.333333333y

Simplifying
x = 9.333333333 + 2.333333333y

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