-3(5S-6)-18=-3(7S+3)-4

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Solution for -3(5S-6)-18=-3(7S+3)-4 equation: 


Simplifying
-3(5S + -6) + -18 = -3(7S + 3) + -4

Reorder the terms:
-3(-6 + 5S) + -18 = -3(7S + 3) + -4
(-6 * -3 + 5S * -3) + -18 = -3(7S + 3) + -4
(18 + -15S) + -18 = -3(7S + 3) + -4

Reorder the terms:
18 + -18 + -15S = -3(7S + 3) + -4

Combine like terms: 18 + -18 = 0
0 + -15S = -3(7S + 3) + -4
-15S = -3(7S + 3) + -4

Reorder the terms:
-15S = -3(3 + 7S) + -4
-15S = (3 * -3 + 7S * -3) + -4
-15S = (-9 + -21S) + -4

Reorder the terms:
-15S = -9 + -4 + -21S

Combine like terms: -9 + -4 = -13
-15S = -13 + -21S

Solving
-15S = -13 + -21S

Solving for variable 'S'.

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

Add '21S' to each side of the equation.
-15S + 21S = -13 + -21S + 21S

Combine like terms: -15S + 21S = 6S
6S = -13 + -21S + 21S

Combine like terms: -21S + 21S = 0
6S = -13 + 0
6S = -13

Divide each side by '6'.
S = -2.166666667

Simplifying
S = -2.166666667

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