5x+9y=18-(x+y)

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Solution for 5x+9y=18-(x+y) equation:


Simplifying
5x + 9y = 18 + -1(x + y)
5x + 9y = 18 + (x * -1 + y * -1)
5x + 9y = 18 + (-1x + -1y)

Solving
5x + 9y = 18 + -1x + -1y

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
5x + x + 9y = 18 + -1x + x + -1y

Combine like terms: 5x + x = 6x
6x + 9y = 18 + -1x + x + -1y

Combine like terms: -1x + x = 0
6x + 9y = 18 + 0 + -1y
6x + 9y = 18 + -1y

Add '-9y' to each side of the equation.
6x + 9y + -9y = 18 + -1y + -9y

Combine like terms: 9y + -9y = 0
6x + 0 = 18 + -1y + -9y
6x = 18 + -1y + -9y

Combine like terms: -1y + -9y = -10y
6x = 18 + -10y

Divide each side by '6'.
x = 3 + -1.666666667y

Simplifying
x = 3 + -1.666666667y

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