Question

Tìm x:

x/13 + 15/26 = 46/52.     

Answer 1

x/13+15/26=46/52

=> x/13= 46/52-15/26

=> x/13=4/13

=> x=4

Answer 2

x/3 + 15/26 = 46/52

x/13 + 15/26 = 23/26

x/13 = 23/26 - 15/26

x/13 = 4/13

Có x/13 = 4/13

Suy ra : x = 4

Vậy x = 4

Answer 3

x/13 + 15/26 = 46/52

x/13              = 46/52 - 15/26

x/13              =       4/13

=> x = 4

day la cach lam don gian va de hieu nhat