2*17.5+s=78

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Solution for 2*17.5+s=78 equation: 


Simplifying
2 * 17.5 + s = 78

Multiply 2 * 17.5
35 + s = 78

Solving
35 + s = 78

Solving for variable 's'.

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

Add '-35' to each side of the equation.
35 + -35 + s = 78 + -35

Combine like terms: 35 + -35 = 0
0 + s = 78 + -35
s = 78 + -35

Combine like terms: 78 + -35 = 43
s = 43

Simplifying
s = 43

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