Respuesta :

apologiabiology
(5s)/7=30
mutiply both sides by 7, that makes it cancel the fraction
(5s)7/7=30 times 7
5s times 7/7=210
5s times 1=210
5s=210
divide both sides by 5
5s/5=210/5
s times 5/5=42
s times 1=42
s=42