Respuesta :

S= -1 because you solve for s by simplifying both sides of tje equation, then isolating the variable.

4.2 explanation below

You wanna Add 4s to both sides giving you 8=5s+13

you now subtract 13 from both sides giving you 21=5s

now your final step is to divide 5 from both sides giving you 4.2=s

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