7x-2y=21+3(y-5x)

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Solution for 7x-2y=21+3(y-5x) equation:


Simplifying
7x + -2y = 21 + 3(y + -5x)

Reorder the terms:
7x + -2y = 21 + 3(-5x + y)
7x + -2y = 21 + (-5x * 3 + y * 3)
7x + -2y = 21 + (-15x + 3y)

Solving
7x + -2y = 21 + -15x + 3y

Solving for variable 'x'.

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

Add '15x' to each side of the equation.
7x + 15x + -2y = 21 + -15x + 15x + 3y

Combine like terms: 7x + 15x = 22x
22x + -2y = 21 + -15x + 15x + 3y

Combine like terms: -15x + 15x = 0
22x + -2y = 21 + 0 + 3y
22x + -2y = 21 + 3y

Add '2y' to each side of the equation.
22x + -2y + 2y = 21 + 3y + 2y

Combine like terms: -2y + 2y = 0
22x + 0 = 21 + 3y + 2y
22x = 21 + 3y + 2y

Combine like terms: 3y + 2y = 5y
22x = 21 + 5y

Divide each side by '22'.
x = 0.9545454545 + 0.2272727273y

Simplifying
x = 0.9545454545 + 0.2272727273y

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