s-3=42

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Solution for s-3=42 equation: 


Simplifying
s + -3 = 42

Reorder the terms:
-3 + s = 42

Solving
-3 + s = 42

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 + s = 42 + 3

Combine like terms: -3 + 3 = 0
0 + s = 42 + 3
s = 42 + 3

Combine like terms: 42 + 3 = 45
s = 45

Simplifying
s = 45

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