Question

preciso de ajuda pfv b) 90 - [ 25+ ( 5x2-1) +3 ) =
c) 45 + [(8x5 -10:2) + (18:6-2)]
d) 50 -2. {7+8:2 - [9-3.(5-4)]} =
e) 100 -3.5+8:2-[3.(7-6)}}​

Answer 1

Explicação passo-a-passo:

b) 90 - [ 25+ ( 5x2-1) +3 ) =

90-[25+9+3]

90-37

127

c) 45 + [(8x5 -10:2) + (18:6-2)]

45+[(40-10:2)+3-2]

45+[15+3-2]

45+16

61

d) 50 -2. {7+8:2 - [9-3.(5-4)]} =

50-2.{7+8:2-[9-3.1]}

50-2.{7+8:2-6}

50-2.{7+4-6}

50-2.5

50-10

40

e) 100 -3.5+8:2-[3.(7-6)}}

100-3.5+8:2-[3.1]

100-3.5+8:2-3

100-15+4-3

100-15+1

100-14

86