-7Y+3X=21

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


Simplifying
-7Y + 3X = 21

Reorder the terms:
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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