Question

3- calcule o valor das seguintes expressões.
1. -4+[-3+(-5+9-2)]:
2. -6[10+(8-3)-1]:
3.-8-[-2-(-12)+3]:
4.25-{-2+[6+(-4-1)]}:
5.17-{-2+[6+(-4-1)]}:
6.3-{-5-[8-2+(-5+9)]}:
7.-10-{-2+[+1-(-3-5)+3)]}:
8.{2+[1+(-15-15)-2]}:
9.{30+[10-5+(-2-3)]-18-12}:
10.20+{[7+5+(-9+7)+3]}:​

Answer 1

Explicação passo-a-passo:

1. -4+[-3+(-5+9-2)]:

-4+[-3+2]

-4+(-1)

-5

2. -6[10+(8-3)-1]:

-6[10+5-1]

-6[-14]

+84

3.-8-[-2-(-12)+3]:

-8-[-2+12+3]

-8-[13]

-21

4. 25-{-2+[6+(-4-1)]}:

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

25-{-2+1}

25-{-1}

26

5. 17-{-2+[6+(-4-1)]}:

17-{-2+[6+(-5)]}

17-{-2+1}

17+1

18

6. 3-{-5-[8-2+(-5+9)]}:

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

3-{-5-(10)]}

3-{-15}

3+15

18

7. -10-{-2+[+1-(-3-5)+3)]}

-10-{-2+[+1-(-8)+3]}

-10-{-2+[+1+8+8]}

-10-{-2+17}

-10-(15)

-25

8. {2+[1+(-15-15)-2]}:

{2+[1+(-30)-2]}

{2+(-31)}

-29

9. { 30+[10-5+(-2-3)]-18-12}:

{30+[10-5-5]-30}

{30-30}

0

10. 20+{[7+5+(-9+7)+3]}:

20+{[7+5+(-2)+3]}

20+13

33

Espero ter ajudado :)