8-21x=1-20x

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Solution for 8-21x=1-20x equation:


Simplifying
8 + -21x = 1 + -20x

Solving
8 + -21x = 1 + -20x

Solving for variable 'x'.

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

Add '20x' to each side of the equation.
8 + -21x + 20x = 1 + -20x + 20x

Combine like terms: -21x + 20x = -1x
8 + -1x = 1 + -20x + 20x

Combine like terms: -20x + 20x = 0
8 + -1x = 1 + 0
8 + -1x = 1

Add '-8' to each side of the equation.
8 + -8 + -1x = 1 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = 1 + -8
-1x = 1 + -8

Combine like terms: 1 + -8 = -7
-1x = -7

Divide each side by '-1'.
x = 7

Simplifying
x = 7

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