42-12=-5s+51

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Solution for 42-12=-5s+51 equation: 


Simplifying
42 + -12 = -5s + 51

Combine like terms: 42 + -12 = 30
30 = -5s + 51

Reorder the terms:
30 = 51 + -5s

Solving
30 = 51 + -5s

Solving for variable 's'.

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

Add '5s' to each side of the equation.
30 + 5s = 51 + -5s + 5s

Combine like terms: -5s + 5s = 0
30 + 5s = 51 + 0
30 + 5s = 51

Add '-30' to each side of the equation.
30 + -30 + 5s = 51 + -30

Combine like terms: 30 + -30 = 0
0 + 5s = 51 + -30
5s = 51 + -30

Combine like terms: 51 + -30 = 21
5s = 21

Divide each side by '5'.
s = 4.2

Simplifying
s = 4.2

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