7+x-1=21x-2

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Solution for 7+x-1=21x-2 equation:


Simplifying
7 + x + -1 = 21x + -2

Reorder the terms:
7 + -1 + x = 21x + -2

Combine like terms: 7 + -1 = 6
6 + x = 21x + -2

Reorder the terms:
6 + x = -2 + 21x

Solving
6 + x = -2 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
6 + x + -21x = -2 + 21x + -21x

Combine like terms: x + -21x = -20x
6 + -20x = -2 + 21x + -21x

Combine like terms: 21x + -21x = 0
6 + -20x = -2 + 0
6 + -20x = -2

Add '-6' to each side of the equation.
6 + -6 + -20x = -2 + -6

Combine like terms: 6 + -6 = 0
0 + -20x = -2 + -6
-20x = -2 + -6

Combine like terms: -2 + -6 = -8
-20x = -8

Divide each side by '-20'.
x = 0.4

Simplifying
x = 0.4

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