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