3x-1=21x-91

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Solution for 3x-1=21x-91 equation:


Simplifying
3x + -1 = 21x + -91

Reorder the terms:
-1 + 3x = 21x + -91

Reorder the terms:
-1 + 3x = -91 + 21x

Solving
-1 + 3x = -91 + 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.
-1 + 3x + -21x = -91 + 21x + -21x

Combine like terms: 3x + -21x = -18x
-1 + -18x = -91 + 21x + -21x

Combine like terms: 21x + -21x = 0
-1 + -18x = -91 + 0
-1 + -18x = -91

Add '1' to each side of the equation.
-1 + 1 + -18x = -91 + 1

Combine like terms: -1 + 1 = 0
0 + -18x = -91 + 1
-18x = -91 + 1

Combine like terms: -91 + 1 = -90
-18x = -90

Divide each side by '-18'.
x = 5

Simplifying
x = 5

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