3(x+y)=7(y-x)

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


Simplifying
3(x + y) = 7(y + -1x)
(x * 3 + y * 3) = 7(y + -1x)
(3x + 3y) = 7(y + -1x)

Reorder the terms:
3x + 3y = 7(-1x + y)
3x + 3y = (-1x * 7 + y * 7)
3x + 3y = (-7x + 7y)

Solving
3x + 3y = -7x + 7y

Solving for variable 'x'.

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

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

Combine like terms: 3x + 7x = 10x
10x + 3y = -7x + 7x + 7y

Combine like terms: -7x + 7x = 0
10x + 3y = 0 + 7y
10x + 3y = 7y

Add '-3y' to each side of the equation.
10x + 3y + -3y = 7y + -3y

Combine like terms: 3y + -3y = 0
10x + 0 = 7y + -3y
10x = 7y + -3y

Combine like terms: 7y + -3y = 4y
10x = 4y

Divide each side by '10'.
x = 0.4y

Simplifying
x = 0.4y

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