5-3S-8+2S=21-9

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Solution for 5-3S-8+2S=21-9 equation:


Simplifying
5 + -3S + -8 + 2S = 21 + -9

Reorder the terms:
5 + -8 + -3S + 2S = 21 + -9

Combine like terms: 5 + -8 = -3
-3 + -3S + 2S = 21 + -9

Combine like terms: -3S + 2S = -1S
-3 + -1S = 21 + -9

Combine like terms: 21 + -9 = 12
-3 + -1S = 12

Solving
-3 + -1S = 12

Solving for variable 'S'.

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

Add '3' to each side of the equation.
-3 + 3 + -1S = 12 + 3

Combine like terms: -3 + 3 = 0
0 + -1S = 12 + 3
-1S = 12 + 3

Combine like terms: 12 + 3 = 15
-1S = 15

Divide each side by '-1'.
S = -15

Simplifying
S = -15

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