7(3s+9)=210

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Solution for 7(3s+9)=210 equation:


Simplifying
7(3s + 9) = 210

Reorder the terms:
7(9 + 3s) = 210
(9 * 7 + 3s * 7) = 210
(63 + 21s) = 210

Solving
63 + 21s = 210

Solving for variable 's'.

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

Add '-63' to each side of the equation.
63 + -63 + 21s = 210 + -63

Combine like terms: 63 + -63 = 0
0 + 21s = 210 + -63
21s = 210 + -63

Combine like terms: 210 + -63 = 147
21s = 147

Divide each side by '21'.
s = 7

Simplifying
s = 7

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