7(3s+4)=280

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Solution for 7(3s+4)=280 equation:


Simplifying
7(3s + 4) = 280

Reorder the terms:
7(4 + 3s) = 280
(4 * 7 + 3s * 7) = 280
(28 + 21s) = 280

Solving
28 + 21s = 280

Solving for variable 's'.

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

Add '-28' to each side of the equation.
28 + -28 + 21s = 280 + -28

Combine like terms: 28 + -28 = 0
0 + 21s = 280 + -28
21s = 280 + -28

Combine like terms: 280 + -28 = 252
21s = 252

Divide each side by '21'.
s = 12

Simplifying
s = 12

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