Question

como resouve isso. b) -20+(+4-6) ? c) 8+(-20+3) ? d) 5-(+5)-(15+5) ? e)-5÷[(+8-12)-(-9)] ?

Answer 1

b) -20 + (4 -6) = -20 + (-2) = -20 - 2 = -22
c) 8 + (- 20 +3) = 8 + (-17) = 8 - 17 = -9
d) 5 - (+5) - (15 + 5) = 5 - 5 - 20 = -20
e) -5 / [(8-12)- (-9)] = -5 / [-4 + 9] = -5 / 5 = -1

Answer 2

B) -20+(-2)
-20-2
-22

C) 8+(-17)
8-17
-9

D) 5-5-20
-20

E)-5÷[(-4)+9]
-5÷[-4+9]
-5÷5
-1