-3X+7Y=-21

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Solution for -3X+7Y=-21 equation: 


Simplifying
-3X + 7Y = -21

Solving
-3X + 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.
-3X + 7Y + -7Y = -21 + -7Y

Combine like terms: 7Y + -7Y = 0
-3X + 0 = -21 + -7Y
-3X = -21 + -7Y

Divide each side by '-3'.
X = 7 + 2.333333333Y

Simplifying
X = 7 + 2.333333333Y

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