Question

Calcule as expressões abaixo:

a)(12+2×5)-8=

b)25+[7+(8-4÷2)]=

c)100-[(2×4+6)+(2+6×4)]=

d)2+8-3-5+15=

e)12+[35-(10+2)+2]=

f)60÷{2.[-7+18÷(-3+12)]}=

Answer 1

Explicação passo-a-passo:

a)(12+2×5)-8

(12+10)-8

(22)-8

22-8

14

b)25+[7+(8-4÷2)]

25+[7+(8-2)]

25+[7+(+6)]

25+[7+6]

25+[+13]

25+13

38

c)100-[(2×4+6)+(2+6×4)]

100-[(8+6)+(2+24)]

100-[(14)+(26)]

100-[14+26]

100-[40]

100-40

60

d)2+8-3-5+15

10 -8 +15

2 +15

17

e)12+[35-(10+2)+2]

12+[35-(+8)+2]

12+[35-8+2]

12+[35-6]

12+[29]

12+29

41

f)60÷{2.[-7+18÷(-3+12)]}

60÷{2.[-7+18÷(+9)]}

60÷{2.[-7+2]}

60÷{2.[-5]}

60÷{-10}

-6