3(3s+7)=-(8-s)

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Solution for 3(3s+7)=-(8-s) equation:


Simplifying
3(3s + 7) = -1(8 + -1s)

Reorder the terms:
3(7 + 3s) = -1(8 + -1s)
(7 * 3 + 3s * 3) = -1(8 + -1s)
(21 + 9s) = -1(8 + -1s)
21 + 9s = (8 * -1 + -1s * -1)
21 + 9s = (-8 + 1s)

Solving
21 + 9s = -8 + 1s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
21 + 9s + -1s = -8 + 1s + -1s

Combine like terms: 9s + -1s = 8s
21 + 8s = -8 + 1s + -1s

Combine like terms: 1s + -1s = 0
21 + 8s = -8 + 0
21 + 8s = -8

Add '-21' to each side of the equation.
21 + -21 + 8s = -8 + -21

Combine like terms: 21 + -21 = 0
0 + 8s = -8 + -21
8s = -8 + -21

Combine like terms: -8 + -21 = -29
8s = -29

Divide each side by '8'.
s = -3.625

Simplifying
s = -3.625

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