MER AJUDEM POR FAVOR =)
a)25-{[10+(7-4)]}
b)32+{[10-(9-4)+8]}
c)45-{[12-4+(2+1)]}
d)70-{20-[10-(5-1)]}
e)28+{13-[6-(4+1)+2)-1}
f)53-{20-[30-(15-1+6)+2]}
g)62-[{16-[7-(6-4)+1]}
h)20-{8+[3+(8-5)-1]+}
i)15+{25-[2-(8-6)]+2}
j)56-[3+(8-2)+(51-10)-(7-2)]
k){42+[(45-19)-(18-3)+1]-(28-15)-1}
Soluções para a tarefa
Explicação passo-a-passo:
a)25 - {[10+3
)25 - {[10+3 25 - 13
)25 - {[10+3 25 - 13 12
b)32 + {[10-5+8]}
32 + {13}
32+13
45
c)45-{[12-4+3]} 25 - {13}
45 - {11}
45-11
34
d)70 - {20-[10-4]}.
d)70 - {20-[10-4]}. 70 - {20-6}
d)70 - {20-[10-4]}. 70 - {20-6} 70-14
56
e)28 + {13-[6-5+2-1]}
28 + {13-2}
28+11
39
f)53-{20-[30-20+2]}
53-{20-12}
53-{20-12} 53-12
53-{20-12} 53-12 41
41g)62-{16-[7-2+1]}
62-{16-6}
62-10
52
h)20-{8+[3+3-1]+}
20-{8+[3+3-1]}
20-{8+5}
20-13
7
i) 15+{25-[2-2]+2}
15+{25-0+2}
15+{25-0+2} 15+{27}
15+{27} 15+27
42
42 j)56-[3+6+41-5] k){42+[26-15+1]-13-1}
k){42+[26-15+1]-13-1} 56-[50-5] {42+12-14}
k){42+[26-15+1]-13-1} 56-[50-5] {42+12-14} 56-45 {54-14}
k){42+[26-15+1]-13-1} 56-[50-5] {42+12-14} 56-45 {54-14} 11 40
