(s*2)+s+s-3=45

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Solution for (s*2)+s+s-3=45 equation:


Simplifying
(s * 2) + s + s + -3 = 45

Reorder the terms for easier multiplication:
(2s) + s + s + -3 = 45

Reorder the terms:
-3 + (2s) + s + s = 45

Combine like terms: (2s) + s = 3s
-3 + 3s + s = 45

Combine like terms: 3s + s = 4s
-3 + 4s = 45

Solving
-3 + 4s = 45

Solving for variable 's'.

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

Add '3' to each side of the equation.
-3 + 3 + 4s = 45 + 3

Combine like terms: -3 + 3 = 0
0 + 4s = 45 + 3
4s = 45 + 3

Combine like terms: 45 + 3 = 48
4s = 48

Divide each side by '4'.
s = 12

Simplifying
s = 12

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