Question

Calcular o valor das expressões
17-(5-3)+(9-6)
(11-5+7)-3+(8+5-9)
25-(8-5+3)-(12-5-8)
18-[2+(7-3-8)-10]
25{-2+[6+(-4-1)]
{2+[1+(-15-15)-2)]

Answer 1

a)

17-(5-3)+(9-6)
17 - 2 + 3
15 + 3
18


b
(11-5+7)-3+(8+5-9)
6+7-3+8+5-9
13-3+8+5-9
16+8+5-9
24+5-9
29-9
38



c)
25-(8-5+3)-(12-5-8)
25-8+5-3-12+5+8
23-8+5-3-12+5+8
14+5-3-12+5+8
19-3-12+5+8
16-12+5+8
4+5+8
9+8
17



c)
18-[2+(7-3-8)-10]
18-[2+4-8-10]
18-2-4+8+10
20-4+8+10
16+8+10
24+10
34


d)
25+{-2+[6+(-4-1)]
25+{-2+[6+(-5)]
25+{-2+1}
25-1
24



e)

{2+[1+(-15-15)-2]}
{2+[1-2]}
{2-1}
1