6x+7y=18-21

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Solution for 6x+7y=18-21 equation: 


Simplifying
6x + 7y = 18 + -21

Combine like terms: 18 + -21 = -3
6x + 7y = -3

Solving
6x + 7y = -3

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.
6x + 7y + -7y = -3 + -7y

Combine like terms: 7y + -7y = 0
6x + 0 = -3 + -7y
6x = -3 + -7y

Divide each side by '6'.
x = -0.5 + -1.166666667y

Simplifying
x = -0.5 + -1.166666667y

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