5y-5x=21

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Solution for 5y-5x=21 equation: 


Simplifying
5y + -5x = 21

Reorder the terms:
-5x + 5y = 21

Solving
-5x + 5y = 21

Solving for variable 'x'.

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

Add '-5y' to each side of the equation.
-5x + 5y + -5y = 21 + -5y

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

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

Simplifying
x = -4.2 + y

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