Question

2) Calcule o valor das expressões:
1) 30-(5+3) =
2) 15+ (8 + 2) =
3) 25 - (10-1-3) =
4)23 - (2 + 8) - 7=
5) (10.5) - (1 + 6) =
67-(8-3) + 1 =
7)25-10+ [7 - 4) =
8) 32 - (10-19 - 4) + 8) =
9) 45 -12- 4+ (2 + 1)] =
10) 70 - 120 - [10 - (5 - 1)]) =
11) 28+ (13-16-(4 + 1) + 2] - 1) =
12) 53 - 20 - 30 - (15-1+6) + 2]) =
13) 62 - 16 - 17 - (6 - 4) + 1]) =
1420 - 18+ [3+ (8-5) - 1] + 6) =
15) 15 +{25-[2-(8-6)] + 2) =​

Answer 1

Resposta:

1- 30-(5+3)

30-8

22

2- 15+(8+2)

15+10

25

3-25-(10-1-3)

25-(9-3)

25-6

19

4- 23-(2+8)-7

23-10-7

13-7

6

5- (10.5) - (1+6)

50 - 7

43

6- (8-3) + 1

5+1

6

7- 25-10+[7-4]

25-10+ 3

15 + 3

18

8- 32- (10-19-4) + 8

32- (-9-4) + 8

32 - (- 13) + 8

45 + 8

53

9- 45- 12- 4 +( 2+1)

45-12-4+3

33-7

26

10- 70- 120-[10-(5-1)]

70- 120-[10-4]

70-120-6

-50-6

-56

12- 53-20-30-(15-1+6) +2

53-20-30-(14+6)+2

53-20-30-20+2

33-10+2

23+2

25

13-62-16-17-(6-4)+1

62-16-17-2+1

46-15+1

31+1

32

14- 20-18+[3+(8-5)-1]+6

20-18+[3+3-1] +6

20-18+[6-1]+6

20-18+5+6

2+11

13

15- 15 +{25-[2-(8-6)] + 2)

15+{25-[2-2]+2

15+{25-(+2)}

15+ 23

38

Espero ter ajudado ☺️

Answer 2

Resposta:

1) 22

2) 25

3) 19

4) 6

5) 43

6) 6

7) 18

8) 53

9) 26

10) -56

11) 20

12) 15

13) 28

14) 13

15) 38

Explicação passo-a-passo:

1) 30-(5+3)=

30- 8=

22

2) 15+(8+2)=

15+10

25

3) 25-(10-1-3)

25-6

19

4) 23-(2+8)-7

23-10-7

23-17

6

5) (10.5)-(1+6)

50-7

43

6) (8-3)+1

5+1

6

7) 25-10+(7-4)

25-10+3

28-10

18

8) 32-(10-19-4)+8

32+13+8

40+13

53

9) 45-12-4+(2+1)

45-12-4-3

45-19

26

10) 70-120-[10-(5-1)]

70-120-[10-4]

70-120-6

70-126

-56

11) 28+(13-16-(4+1)+2-1)

28+(13-16-5+2+1)

28+(-23+15)

28-23+15

43-23

20

12)53-20-30-(15-1+6)+2

53-20-30-20+2

55-70

15

13) 62-16-17-(6-4)+1

62-16-17-2+1

63-35

28

14) 20-18+[3+(8-5)-1]+6

20-18+[3+3-1]+6

20-18+5+6

31-18

13

15) 15+(25-[2-(8-6)]+2

15+(25-[2-2]+2

15+(25-0+2)

15+23

38