Question

Calcule o valor das expressões:

a) -10+[2-1+(-20+4)]

b) 25-[-5-(2-5-1)+3]+9

c) 20-4-[4-(-6+10)]

d) +2+{+8-[-5-(+7-2)]-7}

e) 25-{8-6+[9-(4-2)-5]}

f) 45-{2-[5+4+(6-2)-(7+3-9)+6]-7}+8

g) -65-[-20+5-(-15+5)+40}

h) 25-{-8-[3+(-6-2)+5]}

i) 16-(-3)+[-4+2-(-12+2)]

j) -35+{7+[-12-(-18+2-1)]-16}

k) -[4-(5-10+6)]+[-3+(3+1-2)]

l) {[(0-6)-(0+2)]+[(0-3)-(0+5)]}-(-20)

Answer 1

a) -10+(2-1+16)
-10+17
-7

b) 25-(-5-4+3)+9
25-12+9
22

c)20-4-(4-4)
20-4
16

d)2+2+[8-(-5-5)-7]
2+2+(8-10-7)
2+2+ (-9)
4+9
13

e)25-{8-6+[9-(4-2)-5]}
25- [8-6+(9-2-5)
25-(8-6+2)
25-4
21

f) 45-{2-[5+4+(6-2)-(7+3-9)+6]-7}+8
45-[-2-(5+4+4-1+6)-7]+9
45-(-2-18-7)+9
45-13+9
32+9
41