Verified answer

(3 1/2х - 1/4) · 8 = 5

3 1/2х - 1/4 = 5/8

3 1/2х = 5/8 + 1/4

3 1/2х = 5/8 + 2/8

7/2х = 7/8

х = 7/8 : 7/2

х = 7/8 · 2/7

х = 2/8

х = 1/4 - сократили на 2