3x+7y=21fory

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Solution for 3x+7y=21fory equation: 


Simplifying
3x + 7y = 21fory

Solving
3x + 7y = 21fory

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 = 21fory + -7y

Combine like terms: 7y + -7y = 0
3x + 0 = 21fory + -7y
3x = 21fory + -7y

Divide each side by '3'.
x = 7fory + -2.333333333y

Simplifying
x = 7fory + -2.333333333y

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