Respuesta :

Answer:

4

Step-by-step explanation:

3*10=10+5s

30-10=5s

20=5s

20/5=s

4=s

Answer:

s = 4

Step-by-step explanation:

3(10) = 10 + 5s

30 = 10 + 5s

-10 -10

20 = 5s

/5 /5

4 = s

s = 4

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