3s-9=-7+s

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Solution for 3s-9=-7+s equation:


Simplifying
3s + -9 = -7 + s

Reorder the terms:
-9 + 3s = -7 + s

Solving
-9 + 3s = -7 + s

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.
-9 + 3s + -1s = -7 + s + -1s

Combine like terms: 3s + -1s = 2s
-9 + 2s = -7 + s + -1s

Combine like terms: s + -1s = 0
-9 + 2s = -7 + 0
-9 + 2s = -7

Add '9' to each side of the equation.
-9 + 9 + 2s = -7 + 9

Combine like terms: -9 + 9 = 0
0 + 2s = -7 + 9
2s = -7 + 9

Combine like terms: -7 + 9 = 2
2s = 2

Divide each side by '2'.
s = 1

Simplifying
s = 1

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