s+3s+2s+s-4s=12

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Solution for s+3s+2s+s-4s=12 equation: 


Simplifying
s + 3s + 2s + s + -4s = 12

Combine like terms: s + 3s = 4s
4s + 2s + s + -4s = 12

Combine like terms: 4s + 2s = 6s
6s + s + -4s = 12

Combine like terms: 6s + s = 7s
7s + -4s = 12

Combine like terms: 7s + -4s = 3s
3s = 12

Solving
3s = 12

Solving for variable 's'.

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

Divide each side by '3'.
s = 4

Simplifying
s = 4

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