3s(a+7)=51

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Solution for 3s(a+7)=51 equation:


Simplifying
3s(a + 7) = 51

Reorder the terms:
3s(7 + a) = 51
(7 * 3s + a * 3s) = 51

Reorder the terms:
(3as + 21s) = 51
(3as + 21s) = 51

Solving
3as + 21s = 51

Solving for variable 'a'.

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

Add '-21s' to each side of the equation.
3as + 21s + -21s = 51 + -21s

Combine like terms: 21s + -21s = 0
3as + 0 = 51 + -21s
3as = 51 + -21s

Divide each side by '3s'.
a = 17s-1 + -7

Simplifying
a = 17s-1 + -7

Reorder the terms:
a = -7 + 17s-1

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