-2x-1=x+20

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Solution for -2x-1=x+20 equation:


Simplifying
-2x + -1 = x + 20

Reorder the terms:
-1 + -2x = x + 20

Reorder the terms:
-1 + -2x = 20 + x

Solving
-1 + -2x = 20 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-1 + -2x + -1x = 20 + x + -1x

Combine like terms: -2x + -1x = -3x
-1 + -3x = 20 + x + -1x

Combine like terms: x + -1x = 0
-1 + -3x = 20 + 0
-1 + -3x = 20

Add '1' to each side of the equation.
-1 + 1 + -3x = 20 + 1

Combine like terms: -1 + 1 = 0
0 + -3x = 20 + 1
-3x = 20 + 1

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

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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