5x-6/9=70/45 уравнение дроби
5х=70/45+30/45 5х=100/45 Х=20/45 Х=4/9
5х=70/45+30/45 5х=100/45 x=20/45 x=4/9 ______________ 5*4/9=70/45 70/45=70/45
5х-6/9=70/45 225x-30=70 225x=100 x=100/225=4/9