9s+12+2s=21

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Solution for 9s+12+2s=21 equation:


Simplifying
9s + 12 + 2s = 21

Reorder the terms:
12 + 9s + 2s = 21

Combine like terms: 9s + 2s = 11s
12 + 11s = 21

Solving
12 + 11s = 21

Solving for variable 's'.

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

Add '-12' to each side of the equation.
12 + -12 + 11s = 21 + -12

Combine like terms: 12 + -12 = 0
0 + 11s = 21 + -12
11s = 21 + -12

Combine like terms: 21 + -12 = 9
11s = 9

Divide each side by '11'.
s = 0.8181818182

Simplifying
s = 0.8181818182

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