2-1x=20

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Solution for 2-1x=20 equation: 


Simplifying
2 + -1x = 20

Solving
2 + -1x = 20

Solving for variable 'x'.

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

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

Combine like terms: 2 + -2 = 0
0 + -1x = 20 + -2
-1x = 20 + -2

Combine like terms: 20 + -2 = 18
-1x = 18

Divide each side by '-1'.
x = -18

Simplifying
x = -18

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