s*5-21=54

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Solution for s*5-21=54 equation:


Simplifying
s * 5 + -21 = 54

Reorder the terms for easier multiplication:
5s + -21 = 54

Reorder the terms:
-21 + 5s = 54

Solving
-21 + 5s = 54

Solving for variable 's'.

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

Add '21' to each side of the equation.
-21 + 21 + 5s = 54 + 21

Combine like terms: -21 + 21 = 0
0 + 5s = 54 + 21
5s = 54 + 21

Combine like terms: 54 + 21 = 75
5s = 75

Divide each side by '5'.
s = 15

Simplifying
s = 15

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