Question

preciso das contas pfv ae

6/5+3/4.5/2+1/5=

1/5+3/7:4/5=

4/5-2/10+1/5.2/3+(1/5)2

Answer 1

Resposta:

43/20; 103/140; 17/15.

Explicação passo a passo:

6/5 + 3/4 . 5/2 + 1/5 =

6/5 + 15/8 + 1/5 =

Igualando os denominadores:

48/40 + 30/40 + 8/40 =

78/40 + 8/40 =

86/40 = 43/20.

1/5 + 3/7 : 4/5 =

1/5 + 3/7 . 5/4 =

1/5 + 15/28 =

28/140 + 75/140 =

103/140.

4/5 - 2/10 + 1/5 . 2/3 + (1/5)2 =

4/5 - 2/10 + 2/15 + 2/5 =

Igualando os denominadores:

24/30 - 6/30 + 4/30 + 12/30 =

18/30 + 16/30 =

34/30 = 17/15.