21x-1=125

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Solution for 21x-1=125 equation: 


Simplifying
21x + -1 = 125

Reorder the terms:
-1 + 21x = 125

Solving
-1 + 21x = 125

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 21x = 125 + 1

Combine like terms: -1 + 1 = 0
0 + 21x = 125 + 1
21x = 125 + 1

Combine like terms: 125 + 1 = 126
21x = 126

Divide each side by '21'.
x = 6

Simplifying
x = 6

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