57=s+42

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Solution for 57=s+42 equation:


Simplifying
57 = s + 42

Reorder the terms:
57 = 42 + s

Solving
57 = 42 + s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
57 + -1s = 42 + s + -1s

Combine like terms: s + -1s = 0
57 + -1s = 42 + 0
57 + -1s = 42

Add '-57' to each side of the equation.
57 + -57 + -1s = 42 + -57

Combine like terms: 57 + -57 = 0
0 + -1s = 42 + -57
-1s = 42 + -57

Combine like terms: 42 + -57 = -15
-1s = -15

Divide each side by '-1'.
s = 15

Simplifying
s = 15

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