Уравнение (0,75x-2,74): 1,4=2,8 решите 50 ❤️

0,75×-2,74=3,92
0,75×=3,92+2,74
0,75×=6,66
×=6,66/0,75

(0,75х-2,74):15/10=28/10; (0,75х-2,74)*10/14=28/10;
(0.,75-2,74)*5/7=28/10;
0,75х*5/7-2,74*5/7=28/10;
75/100*х*5/7-274/100*5/7=28/10;
75/20*х*1/7-274/20*1/7=28/10;
15/4*х*1/7-137/10*1/7=28/10;
15/28*х-137/70=28/10;
140*15/28*х-140*137/70=140*28/10;
5*15х-2*137=14*28;
75х-274=392;
75х=392+274;
75х=666;
х=666/75;
х=222/25;
х=~8,88