20-0.5x=21

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Solution for 20-0.5x=21 equation:


Simplifying
20 + -0.5x = 21

Solving
20 + -0.5x = 21

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + -0.5x = 21 + -20

Combine like terms: 20 + -20 = 0
0 + -0.5x = 21 + -20
-0.5x = 21 + -20

Combine like terms: 21 + -20 = 1
-0.5x = 1

Divide each side by '-0.5'.
x = -2

Simplifying
x = -2

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