-3(-2s-7)=-s

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Solution for -3(-2s-7)=-s equation:


Simplifying
-3(-2s + -7) = -1s

Reorder the terms:
-3(-7 + -2s) = -1s
(-7 * -3 + -2s * -3) = -1s
(21 + 6s) = -1s

Solving
21 + 6s = -1s

Solving for variable 's'.

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

Add 's' to each side of the equation.
21 + 6s + s = -1s + s

Combine like terms: 6s + s = 7s
21 + 7s = -1s + s

Combine like terms: -1s + s = 0
21 + 7s = 0

Add '-21' to each side of the equation.
21 + -21 + 7s = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 7s = 0 + -21
7s = 0 + -21

Combine like terms: 0 + -21 = -21
7s = -21

Divide each side by '7'.
s = -3

Simplifying
s = -3

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