Question

Calcule:
B) 7/2+2/3
C) 2+ 1/4
D)1/3+3/5
E) 1/5+4/5+7/15
F) 4-1/7

Answer 1

Explicação passo-a-passo:

B) 7/2+2/3= 21/6+4/6=25/6

mmc = 6

2,3=2

1,3= 3

1,1

C) 2 + 1 8 1 9

--- ----- = ---- + ----- = ------

1 4 4 4 4

D) 1 3 5 9 14

---- + ---- = ------+ ------ = ------

3 5 15 15 15

E) 1 4 7 3 12 7 22

----+-----+----- = -----+------+------=------

5 5 15 15 15 15 15

F) 4 1 28 1 27

----- - ----- = ----- - ------ = -------

1 7 7 7 7

Espero ter ajudado