9x=40-x

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Solution for 9x=40-x equation: 


Simplifying
9x = 40 + -1x

Solving
9x = 40 + -1x

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.
9x + x = 40 + -1x + x

Combine like terms: 9x + x = 10x
10x = 40 + -1x + x

Combine like terms: -1x + x = 0
10x = 40 + 0
10x = 40

Divide each side by '10'.
x = 4

Simplifying
x = 4

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