10x+11x=90+x

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Solution for 10x+11x=90+x equation: 


Simplifying
10x + 11x = 90 + x

Combine like terms: 10x + 11x = 21x
21x = 90 + x

Solving
21x = 90 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21x + -1x = 90 + x + -1x

Combine like terms: 21x + -1x = 20x
20x = 90 + x + -1x

Combine like terms: x + -1x = 0
20x = 90 + 0
20x = 90

Divide each side by '20'.
x = 4.5

Simplifying
x = 4.5

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