Como resolver a expressao: 1÷(1-1/5) ÷ 3÷(1+1/5)?( me ajudem, e urgente!).... Pergunta de ideia deAnneFriends

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AnneFriends @AnneFriends

December 2019 2 31 Report

Como resolver a expressao: 1÷(1-1/5) ÷ 3÷(1+1/5)?( me ajudem, e urgente!)

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Milli88 1÷(1-1/5)÷3÷(1+1/5)
1:(5-1/5)÷3÷(5+1/5)
1÷4/5÷3÷6/5(multiplicação cruzada)
5/4÷15/6(multiplicação cruzada)
30/60 (simplifica por 15)
2/4(simplifica por 2)
1/2

1 votes Thanks 4

AnneFriends obrigada, ajudou muito!

Milli88 De nada

albertrieben Boa tarde Anne

1 - 1/5 = 5/5 - 1/5 = 4/5
1/(4/5) = 1*(5/4) = 5/4

(5/4)/3 = 5/12

1 + 1/5 = 6/5

(5/12)/(6/5) = (5/12)*(5/6) = 25/72

0 votes Thanks 2