100=90-10x

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Solution for 100=90-10x equation:


Simplifying
100 = 90 + -10x

Solving
100 = 90 + -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
100 + 10x = 90 + -10x + 10x

Combine like terms: -10x + 10x = 0
100 + 10x = 90 + 0
100 + 10x = 90

Add '-100' to each side of the equation.
100 + -100 + 10x = 90 + -100

Combine like terms: 100 + -100 = 0
0 + 10x = 90 + -100
10x = 90 + -100

Combine like terms: 90 + -100 = -10
10x = -10

Divide each side by '10'.
x = -1

Simplifying
x = -1

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