4+6S-6-12S-21-9=

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Solution for 4+6S-6-12S-21-9= equation:


Simplifying
4 + 6S + -6 + -12S + -21 + -9 = 0

Reorder the terms:
4 + -6 + -21 + -9 + 6S + -12S = 0

Combine like terms: 4 + -6 = -2
-2 + -21 + -9 + 6S + -12S = 0

Combine like terms: -2 + -21 = -23
-23 + -9 + 6S + -12S = 0

Combine like terms: -23 + -9 = -32
-32 + 6S + -12S = 0

Combine like terms: 6S + -12S = -6S
-32 + -6S = 0

Solving
-32 + -6S = 0

Solving for variable 'S'.

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

Add '32' to each side of the equation.
-32 + 32 + -6S = 0 + 32

Combine like terms: -32 + 32 = 0
0 + -6S = 0 + 32
-6S = 0 + 32

Combine like terms: 0 + 32 = 32
-6S = 32

Divide each side by '-6'.
S = -5.333333333

Simplifying
S = -5.333333333

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