4x+x+y=9

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Solution for 4x+x+y=9 equation: 


Simplifying
4x + x + y = 9

Combine like terms: 4x + x = 5x
5x + y = 9

Solving
5x + y = 9

Solving for variable 'x'.

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

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

Combine like terms: y + -1y = 0
5x + 0 = 9 + -1y
5x = 9 + -1y

Divide each side by '5'.
x = 1.8 + -0.2y

Simplifying
x = 1.8 + -0.2y

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