86.4=(s+3)+(2s+6)

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Solution for 86.4=(s+3)+(2s+6) equation:


Simplifying
86.4 = (s + 3) + (2s + 6)

Reorder the terms:
86.4 = (3 + s) + (2s + 6)

Remove parenthesis around (3 + s)
86.4 = 3 + s + (2s + 6)

Reorder the terms:
86.4 = 3 + s + (6 + 2s)

Remove parenthesis around (6 + 2s)
86.4 = 3 + s + 6 + 2s

Reorder the terms:
86.4 = 3 + 6 + s + 2s

Combine like terms: 3 + 6 = 9
86.4 = 9 + s + 2s

Combine like terms: s + 2s = 3s
86.4 = 9 + 3s

Solving
86.4 = 9 + 3s

Solving for variable 's'.

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

Add '-3s' to each side of the equation.
86.4 + -3s = 9 + 3s + -3s

Combine like terms: 3s + -3s = 0
86.4 + -3s = 9 + 0
86.4 + -3s = 9

Add '-86.4' to each side of the equation.
86.4 + -86.4 + -3s = 9 + -86.4

Combine like terms: 86.4 + -86.4 = 0.0
0.0 + -3s = 9 + -86.4
-3s = 9 + -86.4

Combine like terms: 9 + -86.4 = -77.4
-3s = -77.4

Divide each side by '-3'.
s = 25.8

Simplifying
s = 25.8

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