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Calcules as expressões dadas no exercício a seguir:
O motivo da pergunta é que já tentei procurar em sites para me ajudar a resolver mas estou com dificuldades de saber fazer a conta. De como começar. A resposta vai me ajudar a ganhar mais conhecimento.
A)3(-5+6)+4(10-15)=
B)5+6(7+5(6-1)+4)=
C)10(-20+40).5(10-20)=
D)2(45+35-80-(10.5)+(6.5))=
E)(-20+10).(40-15).(50-75)=
Obrigado(a)
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