Question

Calcule o valor de cada expressão

A) +3/5 -1/1 -2/5=
B) +3/5 -1/2 +1/10=
C) -3/1 -2/1 -4/3=
D) +4/1 -1/10 +2/5=
E) +2/3 -1/2 -5/1=
F) -5/12 -1/12 +2/3=
G) -1/3 +2/9 -4/3=
H) -4/1 +1/2 -1/6=
I) +3/10 +1/2 -3/4

Com os cálculos por favor

Answer 1

Vamos lá....

Calcule o valor de cada expressão :

a)

+ 3/5 - 1/1 - 2/5

3 - 2/5 - 1/1

1/5 - 1/1⇒mmc = 5

1 - 5/5

- 4/5

 

b)

+ 3/5 - 1/2 + 1/10⇒mmc = 10

6 -5 + 1/10

7 - 5/10

2/10 ÷ 2

1/5

c)

- 3/1 - 2/1 - 4/3⇒mmc = 3

- (9 + 6 + 4)/3

- 19/3

d)

+ 4/1 - 1/10 + 2/5 ⇒mmc = 10

40 - 1 + 4/10

44 - 1/10

43/10

e)

+ 2/3 - 1/2 - 5/1⇒mmc = 6

4 - 3 - 30/6

4 - 33/6

- 29/6

f)

- 5/12 - 1/12 + 2/3

- 5 - 1/12 + 2/3

- 6/12 + 2/3

- 3/6 + 2/3⇒mmc = 6

- 3 + 4/6

1/6

g)

- 1/3 + 2/9 - 4/3

- 1 - 4/3 + 2/9

- 5/3 + 2/9 ⇒mmc = 9

- 15 + 2/9

- 13/9

h)

- 4/1 + 1/2 - 1/6⇒mmc = 6

- 24 + 3 - 1/6

- 25 + 3/6

- 22/6 ÷ 2

- 11/3

 

i)

+ 3/10 + 1/2 - 3/4⇒mmc = 20

6 + 10 - 15/20

16 - 15/20

1/20

Espero ter ajudado.