-18-3(1-x)=-20

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Solution for -18-3(1-x)=-20 equation:


Simplifying
-18 + -3(1 + -1x) = -20
-18 + (1 * -3 + -1x * -3) = -20
-18 + (-3 + 3x) = -20

Combine like terms: -18 + -3 = -21
-21 + 3x = -20

Solving
-21 + 3x = -20

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 3x = -20 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = -20 + 21
3x = -20 + 21

Combine like terms: -20 + 21 = 1
3x = 1

Divide each side by '3'.
x = 0.3333333333

Simplifying
x = 0.3333333333

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