Пошаговое объяснение:

1/8х + 26 + 3/4(7/8х - 20) + 16 = х

1/8х + 26 + 21/32х - 60/4 + 16 = х

1/8х + 26 + 21/32х - 15 + 16 = х

4/32х + 26 + 21/32х - 15 + 16 = х

25/32х + 27 = х

25/32х - х = -27

25/32х - 32/32х = -27

-7/32х = -27

х = -27 : (-7/32)

х = -27 * (-32/7)

х = 864/7

х = 123 3/7