3 * (x+1) / 8+2 * (5-x) / 3=16-13x/12

3 * (x+1) / 8+2 * (5-x) / 3=16-13x/12

8*12 * (3 * (x+1) / 8+2 * (5-x) / 3) = 8*12 * (16-13x/12)

8*12*3 * (х+1) / 8 + 8*12*2 * ((5-х) / 3) = 8*12 * 16 - 8*12*13 х/12

36 * (х+1) + 8*4*2 (5 - х) = 1536 - 8*13 х

36 х + 36 + 320 - 64 х = 1536 - 104 х

36 х - 64 х + 104 х = 1536 - 36 - 320

76 х = 1180

х = 1180/76 = 295·4 / 19·4 = 295 / 19 = 10 + 15·19 / 19 = 15 10 / 19