Façam essa conta com os calculos...
B) 15-(3-2)+(7-4)
C) 25-(8-5+3)-(12-5-8)
D) 18-[2+(7-3-8)-10]
E) -4+[-3+(5+9-2)]
Pls me ajudem
B) 15-(3-2)+(7-4)
C) 25-(8-5+3)-(12-5-8)
D) 18-[2+(7-3-8)-10]
E) -4+[-3+(5+9-2)]
Pls me ajudem
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8-2+7-4
6+3= 9
c)25-8-5+3-12-5-8
17-8-12-5-8
9-12-5-8
-3-5-8
-8-8= -16
d)18-[2+(7-3-8)-10]
18-[2+-4-10]
18-[-2-10]
18-12=4
E) -4+[-3+(5+9-2)]
-4+[-3+12]
-4+9= +5
Espero ter te ajudado!