Respostas
Resposta:
A) 23
B) 20
C) 53
D) 81
E) 40
F) 82
Explicação passo-a-passo:
A) 16+[10-(18÷3+2)+5]
16+[10-(6+2)+5]
16+[10-8+5]
16+7
23
B) 25-[12-(3x2+1)]
25-[12-(6+1)]
25-[12-7]
25-5
20
C) 90-[25+(5x2-1)+3]
90-[25+(10-1)+3]
90-[25+9+3]
90-37
53
D) 45+[(8x5-10÷2)+(18÷6-2)]
45+[(40-5)+(3-2)]
45+[35+1]
45+36
81
E) 50-2x{7+8÷2-[9-3x(5-4)]}
50-2x{7+4-[9-3x1]}
50-2x{7+4-[9-3]}
50-2x{7+4-6}
50-2x5
50-10
40
F) 100-3x{5+8÷2-[3x(7-6)]}
100-3x{5+8÷2-[3x1]}
100-3x{5+8÷2-3}
100-3x{5+4-3}
100-3x6
100-18
82
Resposta:
a) 23
18÷3=6 6+2= 8
10-8= 2 2+5= 7
16+7= 23
b)3×2= 6 6+1= 7
12-7= 5
25-5= 20
c) 5×2= 10 10+1= 11
25+11= 36 36+3= 39
90-39= 51
d) 18÷6= 3 3-2= 1
8×5= 40 40-10= 30 30÷2= 15
15+1= 16 45+16= 61
e) 5-4=1 9-3= 6 6×1= 6
7+8= 15 15÷2= 7,5
7,5 - 6 = 1,5 50-2= 48
48×1,5= 72
f) 7-6= 1 3×1= 3
5+8= 13 13÷2= 6,5
6,5-3= 3,5
100-3= 97 97×3,5 = 339,5
Explicação passo a passo: