8x-1=21

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Solution for 8x-1=21 equation: 


Simplifying
8x + -1 = 21

Reorder the terms:
-1 + 8x = 21

Solving
-1 + 8x = 21

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 + 8x = 21 + 1

Combine like terms: -1 + 1 = 0
0 + 8x = 21 + 1
8x = 21 + 1

Combine like terms: 21 + 1 = 22
8x = 22

Divide each side by '8'.
x = 2.75

Simplifying
x = 2.75

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