4x-y=3(x+y)

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Solution for 4x-y=3(x+y) equation:


Simplifying
4x + -1y = 3(x + y)
4x + -1y = (x * 3 + y * 3)
4x + -1y = (3x + 3y)

Solving
4x + -1y = 3x + 3y

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
4x + -3x + -1y = 3x + -3x + 3y

Combine like terms: 4x + -3x = 1x
1x + -1y = 3x + -3x + 3y

Combine like terms: 3x + -3x = 0
1x + -1y = 0 + 3y
1x + -1y = 3y

Add 'y' to each side of the equation.
1x + -1y + y = 3y + y

Combine like terms: -1y + y = 0
1x + 0 = 3y + y
1x = 3y + y

Combine like terms: 3y + y = 4y
1x = 4y

Divide each side by '1'.
x = 4y

Simplifying
x = 4y

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