19x-0,18=19,01    3,2x+5,6+5,8x=17,21 решите уравнения,

19x-0,18=19,0119х=19,01+0,1819х=19,19х=19,19/19х=1,013,2x+5,6+5,8x=17,219х+5,6=17,219х=17,21-5,69х=11,61х=11,61/9х=1,29

19х-0,18=19,0119х=19,01+0,18 19х=19,19 | :19х=1,01.3,2х+5,6+5,8х=17,21 3,2х+5,8х=17,21-5,69х=11,61 |:9х=1,29