Question

tim x

7+x/12=2/3 =

25-x/18 =1/2

Answer 1

 

7+x/12=2/3

    x/12=7-2/3

    x/12=19/3

19/3=76/12

=>x=76   

25-x/18=1/2

     x/18=25-1/2

     x/18=49/2

49/2=441/18

=>x=441

 Đảm bảo đúng 

Answer 2

7+x/12=2/3

    x/12=7-2/3

    x/12=19/3

19/3=76/12

=>x=76   

25-x/18=1/2

     x/18=25-1/2

     x/18=49/2

49/2=441/18

=>x=441