(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
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(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