Respuesta :

Answer:

10/7

Step-by-step explanation:

5 4/7=39/7

x+39/7=7

x=7-39/7

x=49/7-39/7

x=10/7

bfi29
1 3/7

5 4/7 +1= 6 4/7


6 4/7+ 3/7= 7