(20)-5=1x+21

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Solution for (20)-5=1x+21 equation:


Simplifying
(20) + -5 = 1x + 21
20 + -5 = 1x + 21

Combine like terms: 20 + -5 = 15
15 = 1x + 21

Reorder the terms:
15 = 21 + 1x

Solving
15 = 21 + 1x

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.
15 + -1x = 21 + 1x + -1x

Combine like terms: 1x + -1x = 0
15 + -1x = 21 + 0
15 + -1x = 21

Add '-15' to each side of the equation.
15 + -15 + -1x = 21 + -15

Combine like terms: 15 + -15 = 0
0 + -1x = 21 + -15
-1x = 21 + -15

Combine like terms: 21 + -15 = 6
-1x = 6

Divide each side by '-1'.
x = -6

Simplifying
x = -6

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