3(3s+7)=57

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Solution for 3(3s+7)=57 equation: 


Simplifying
3(3s + 7) = 57

Reorder the terms:
3(7 + 3s) = 57
(7 * 3 + 3s * 3) = 57
(21 + 9s) = 57

Solving
21 + 9s = 57

Solving for variable 's'.

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

Add '-21' to each side of the equation.
21 + -21 + 9s = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 9s = 57 + -21
9s = 57 + -21

Combine like terms: 57 + -21 = 36
9s = 36

Divide each side by '9'.
s = 4

Simplifying
s = 4

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