5x+7y=-21

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Solution for 5x+7y=-21 equation: 


Simplifying
5x + 7y = -21

Solving
5x + 7y = -21

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.
5x + 7y + -7y = -21 + -7y

Combine like terms: 7y + -7y = 0
5x + 0 = -21 + -7y
5x = -21 + -7y

Divide each side by '5'.
x = -4.2 + -1.4y

Simplifying
x = -4.2 + -1.4y

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