Question

Calcule o valor das expressões:

a) 2/5 • 5/6 + 1/2

b) 3/4 • 5/6 + 1/2

c) 2/3 + 1/4 • 3

d) 3/4 : 1/2 - 2/3

e) 2 1/2 + 3/2 • 1/2

Me ajudem, por favor! ;-;​

Answer 1

Olá...

Calcule o valor das expressões:  

a)

2/5 • 5/6 + 1/2  

1/3 + 1/2=mmc = 6

2 + 3/6

5/6

b)

3/4 • 5/6 + 1/2

1/4 × 5/2 + 1/2

5/8 + 1/2⇒mmc = 8

5 +4/8

9/8

c)

2/3 + 1/4 • 3

2/3 + 3/4⇒mmc = 12

8 + 9/12

17/12

d)

3/4 : 1/2 - 2/3

3/4 × 2 - 2/3

3/2 - 2/3 ⇒mmc = 6

9 - 4/6

5/6

e)

2 1/2 + 3/2 • 1/2

21/2 + 3/4⇒mmc = 4

42 + 3/4

45/4

Bons estudos.