(7 1/3+2 1/4): 23/72=2х-1 Решите уравнение
2х-1=(22/3+9/4)÷23/72 2х-1=88+27/12÷23/72 2х-1=115/12*72/23 2х-1=115*6/23 2х-1=115*6/23 2х-1=690/23 2х-1=690/23 2х-1=690/23 2х-1=30 2х=30+1 2х=31 х=31/2 х=15 1/2