-10(X-1)=-20

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Solution for -10(X-1)=-20 equation: 


Simplifying
-10(X + -1) = -20

Reorder the terms:
-10(-1 + X) = -20
(-1 * -10 + X * -10) = -20
(10 + -10X) = -20

Solving
10 + -10X = -20

Solving for variable 'X'.

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

Add '-10' to each side of the equation.
10 + -10 + -10X = -20 + -10

Combine like terms: 10 + -10 = 0
0 + -10X = -20 + -10
-10X = -20 + -10

Combine like terms: -20 + -10 = -30
-10X = -30

Divide each side by '-10'.
X = 3

Simplifying
X = 3

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