20-10+9x=9-1x

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Solution for 20-10+9x=9-1x equation:


Simplifying
20 + -10 + 9x = 9 + -1x

Combine like terms: 20 + -10 = 10
10 + 9x = 9 + -1x

Solving
10 + 9x = 9 + -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.
10 + 9x + x = 9 + -1x + x

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

Combine like terms: -1x + x = 0
10 + 10x = 9 + 0
10 + 10x = 9

Add '-10' to each side of the equation.
10 + -10 + 10x = 9 + -10

Combine like terms: 10 + -10 = 0
0 + 10x = 9 + -10
10x = 9 + -10

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

Divide each side by '10'.
x = -0.1

Simplifying
x = -0.1

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