Question

72:4-3-72:(4×3)+28 ?
[40:4×2-3×(10-7+3)] ?
95-(34×2)+43-(7×3) ?
19+45-18)-15 ?
{27-[(72+3×4):6:7]}:25 ?
Estou com dificuldade nessas .

Answer 1

Resposta:

a)37

b)102

c)49

d)31

e)1

Explicação passo-a-passo:

a) 72:4-3-72:(4×3)+28

72:4-3-72:12+28

18-3-72:12+28

15-72:12+28

15-6+28

9+28

37

b) [40:4×2-3×(10-7+3)]

[40:4×2-3×6]

[10×2-3×6]

[20-3×6]

[17×6]

102

c) 95-(34×2)+43-(7×3)

95-68+43-21

27+22

49

d) (19+45-18)-15

19+27

46-15

31

e) {27-[(72+3×4):6:7]}:25

{27-[84:6:7]}:25

{27-[14:7]}:25

{27-[2]}:25

{25:25}

1