-3(5s-4)-12=-3(7s+4)-4

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Solution for -3(5s-4)-12=-3(7s+4)-4 equation:


Simplifying
-3(5s + -4) + -12 = -3(7s + 4) + -4

Reorder the terms:
-3(-4 + 5s) + -12 = -3(7s + 4) + -4
(-4 * -3 + 5s * -3) + -12 = -3(7s + 4) + -4
(12 + -15s) + -12 = -3(7s + 4) + -4

Reorder the terms:
12 + -12 + -15s = -3(7s + 4) + -4

Combine like terms: 12 + -12 = 0
0 + -15s = -3(7s + 4) + -4
-15s = -3(7s + 4) + -4

Reorder the terms:
-15s = -3(4 + 7s) + -4
-15s = (4 * -3 + 7s * -3) + -4
-15s = (-12 + -21s) + -4

Reorder the terms:
-15s = -12 + -4 + -21s

Combine like terms: -12 + -4 = -16
-15s = -16 + -21s

Solving
-15s = -16 + -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 = -16 + -21s + 21s

Combine like terms: -15s + 21s = 6s
6s = -16 + -21s + 21s

Combine like terms: -21s + 21s = 0
6s = -16 + 0
6s = -16

Divide each side by '6'.
s = -2.666666667

Simplifying
s = -2.666666667

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