Question

(3 1/2x-1/4)×8=3 помогите

Answer 1

Раскроем скобки
3 1/2х * 8 - 1/4 * 8 = 3
7/2х * 8 - 1/4 *8 = 3
28х - 2 = 3
28х = 3 + 2
28х= 5
х = 5 : 28 
х = 5/28