s-s+3s-s+4s=18

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Solution for s-s+3s-s+4s=18 equation: 


Simplifying
s + -1s + 3s + -1s + 4s = 18

Combine like terms: s + -1s = 0
0 + 3s + -1s + 4s = 18
3s + -1s + 4s = 18

Combine like terms: 3s + -1s = 2s
2s + 4s = 18

Combine like terms: 2s + 4s = 6s
6s = 18

Solving
6s = 18

Solving for variable 's'.

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

Divide each side by '6'.
s = 3

Simplifying
s = 3

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