3s-1=20

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Solution for 3s-1=20 equation:


Simplifying
3s + -1 = 20

Reorder the terms:
-1 + 3s = 20

Solving
-1 + 3s = 20

Solving for variable 's'.

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

Add '1' to each side of the equation.
-1 + 1 + 3s = 20 + 1

Combine like terms: -1 + 1 = 0
0 + 3s = 20 + 1
3s = 20 + 1

Combine like terms: 20 + 1 = 21
3s = 21

Divide each side by '3'.
s = 7

Simplifying
s = 7

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