Question

{42+[(45-19)-(18-3)+1]-(28-15)-1}= b) 56-[3+(8-2)+(51-10)-(7-2)]=
c) 15+{25-[2-(8-6)]+2}=
d) 52-{12+[15-(8-4)]}=
e) 65-{30-[20-(10-1+6)+1]}=
f) 38-{20-[22-(5+3)+(7-4+1)]}= g) 3-{2+(11-15)-[5+(-3+1)]+8}= h) -6-{[7-(2x3) : (-6)]x(5-4x2)}= i) -2x(8:2)-5-[-1-(3x7+1)]=

Answer 1

Resposta:

Explicação passo a passo:

a.

{42+[26-15+1]-13-1}=

{42+12-13-1}=

{54-13-1}=

{41-1}=

40

b.

56-[3+6+41-5]=

56-[9-41-5]=

56-[50-5]=

56-45=

11

c.

15+{25-[2-2]+2}=

15+{25-0+2}=

15+27=

42

d.

52-{12+[15-4]}=

52-{12+11}=

52-{23}=

52-23=

29

e.

65-{30-[20-15+1]}=

65-{30-[5+1]}=

65-{30-6}=

65-24=

41

f.

38-{20-[22-8+4]}=

38-{20-[14+4]}=

38-{20-18}=

38-2=

36

g.

3-{2+(-4)-[5+(-2)]+8}=

3-{2-4-[5-2]+8}=

3-{2-4-3+8}=

3-{-2-3+8}=

3-{-5+8}=

3-{+3}=

3-3=

0

h.

-6-{[7-(6):(-6)]x(5-8)}=

-6-{[7-(-1)]x(-3)}=

-6-{[7+1]x(-3)}=

-6-{8x(-3)}=

-6-{-24}=

-6+24=

18

i.

-2x(4)-5-[-1-(21+1)]=

-2x4-5-[-1-22]=

-8-5-[-23]=

-8-5+23=

-13+23=

10