Question

Calcule o valor das expressões apresentando o resultado na forma de fração irredutivel

A) (0,75 + 1/4) : (2/5 + 1/2) =

B) (1/4 x 0,5) + (1/2) =

C) 5/6 + 1,3 + 1/6 + 0,7 =

D) (2/3 - 1/6) : 3/5 =

E) ( Г36/25 + Г4/225) + 5 =

F) (1/2)2 + (2/2)2 : (5/7)=

Answer 1

A) (3/4 + 1/4)/(2/5 + 1/2) = 1/(4/10 + 5/10) = 1/9/10 = 1/9/10 = 1/9 * 1/10 = 1/90
B) (1/4 * 1/2) + 1/2 = 1/8 + 1/2 = 1/8 + 4/8 = 5/8
C) 5/6 + 13/10 + 1/6 + 7/10 = 6/6 + 20/10 = 1 + 2 = 3
D)(2/3 - 1/6)/3/5 = (4/6 - 1/6)/3/5 = 3/6/3/5 = 3/6 * 5/3 = 15/18 =  5/6
E) Nao entendi
F) (1/2) * 2 + (2/2) * 2 /5/7 = (1 + 2)/5/7 = 3/1/5/7 = 3/1 * 5/7 = 15/7        

Answer 2

A)
             (3/4 + 1/4) : (4/10 + 5/10)
                 = (4/4) : (9/10)
                 = 1 x 10/9
                 = 10/9

B)       
           (1/4 x 1/2) + (1/2)
                 = 1/8 + 4/8
                 = 5/8

C)
           5/6 + 13/10 + 1/6 + 7/10
                 = 6/6 + 20/10
                 = 1 + 2
                 = 3

D)
           (4/6 - 1/6) : 3/5
                 = (3/6) x 5/3
                 = 5/6

E)
           ( Г36/25 + Г4/225) + 5
               = (6/5 + 2/15) + 5
               = (18/15 + 2/15) + 5
               = 20/15 + 75/15
               = 95/15
               = 19/3    

F)
           (1/2)2 + (2/2)2 : (5/7)
                 = (1/4) + 4/4) x 7/5
                 = 5/4 + 7/5
                 = 25/20 + 28/20
                 = 53/20