4y-7x=21

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Solution for 4y-7x=21 equation: 


Simplifying
4y + -7x = 21

Reorder the terms:
-7x + 4y = 21

Solving
-7x + 4y = 21

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-4y' to each side of the equation.
-7x + 4y + -4y = 21 + -4y

Combine like terms: 4y + -4y = 0
-7x + 0 = 21 + -4y
-7x = 21 + -4y

Divide each side by '-7'.
x = -3 + 0.5714285714y

Simplifying
x = -3 + 0.5714285714y

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