s+5s-3s=21

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Solution for s+5s-3s=21 equation: 


Simplifying
s + 5s + -3s = 21

Combine like terms: s + 5s = 6s
6s + -3s = 21

Combine like terms: 6s + -3s = 3s
3s = 21

Solving
3s = 21

Solving for variable 's'.

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

Divide each side by '3'.
s = 7

Simplifying
s = 7

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