-21x-7y=42

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Solution for -21x-7y=42 equation: 


Simplifying
-21x + -7y = 42

Solving
-21x + -7y = 42

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.
-21x + -7y + 7y = 42 + 7y

Combine like terms: -7y + 7y = 0
-21x + 0 = 42 + 7y
-21x = 42 + 7y

Divide each side by '-21'.
x = -2 + -0.3333333333y

Simplifying
x = -2 + -0.3333333333y

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