90-x=10(4x)

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Solution for 90-x=10(4x) equation:


Simplifying
90 + -1x = 10(4x)

Remove parenthesis around (4x)
90 + -1x = 10 * 4x

Multiply 10 * 4
90 + -1x = 40x

Solving
90 + -1x = 40x

Solving for variable 'x'.

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

Add '-40x' to each side of the equation.
90 + -1x + -40x = 40x + -40x

Combine like terms: -1x + -40x = -41x
90 + -41x = 40x + -40x

Combine like terms: 40x + -40x = 0
90 + -41x = 0

Add '-90' to each side of the equation.
90 + -90 + -41x = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -41x = 0 + -90
-41x = 0 + -90

Combine like terms: 0 + -90 = -90
-41x = -90

Divide each side by '-41'.
x = 2.195121951

Simplifying
x = 2.195121951

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