10(20+x)-12x=100

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Solution for 10(20+x)-12x=100 equation: 


Simplifying
10(20 + x) + -12x = 100
(20 * 10 + x * 10) + -12x = 100
(200 + 10x) + -12x = 100

Combine like terms: 10x + -12x = -2x
200 + -2x = 100

Solving
200 + -2x = 100

Solving for variable 'x'.

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

Add '-200' to each side of the equation.
200 + -200 + -2x = 100 + -200

Combine like terms: 200 + -200 = 0
0 + -2x = 100 + -200
-2x = 100 + -200

Combine like terms: 100 + -200 = -100
-2x = -100

Divide each side by '-2'.
x = 50

Simplifying
x = 50

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