Respuesta :

7 1/2x - 1/4 = 2/3

15/2x - 1/4 = 2/3

         +1/4     +1/4

15/2x = 11/12

-------     ------

15/2       15/2

x = 11/90

Check:

7 1/2(11/90) - 1/4 = 2/3

15/2(11/90) - 1/4 = 2/3

11/12 - 1/4 = 2/3

2/3 = 2/3

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