Question

Calcule:a)7/4+6/5+3/5=b)9/3-
1/9=c)40/10•2/6=d)45/100÷5/2=

Answer 1

Olá...

Resolução:

a)

7/4 + 6/5 + 3/5

7/4 + 6 + 3/5

7/4 + 9/5 ⇒mmc = 20

35 + 36/20

71/20

b)

9/3 - 1/9

3 - 1/9⇒mmc = 9

27 - 1/9

26/9

c)

40/10 × 2/6

4 × 1/3

4/3

d)

45/100 ÷ 5/2

45/100 × 2/5

9/100 × 2

9/50

Bons estudos.