October 2020 0 158 Report
Ajudem aí ? Queria as respostas , para ver se as minhas estão corretas , e entender o porque !

⇒ ( -2 / 10 ) ÷ ( + 4 / 10 ) =   - 40 / 20

⇒ ( + 0 , 7 ) ÷ ( - 7 ) =  -  0,10
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