18s-21-15s=3

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Solution for 18s-21-15s=3 equation:


Simplifying
18s + -21 + -15s = 3

Reorder the terms:
-21 + 18s + -15s = 3

Combine like terms: 18s + -15s = 3s
-21 + 3s = 3

Solving
-21 + 3s = 3

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 + 3s = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 3s = 3 + 21
3s = 3 + 21

Combine like terms: 3 + 21 = 24
3s = 24

Divide each side by '3'.
s = 8

Simplifying
s = 8

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