annak2500 1) 2 2/11x - 5/16 = 1 3/4
24/11х=7/4+5/16
24/11х=28/16+5/16
24/11х=33/16
х=33/16:24/11=33/16*24/11=3/16*24/1=3/2*3=9/2=4 1/2=4,5

tishkoyulia (2 1/12 - 1 5/6 ) х=3/4
(2 1/12-1 10/12) х=3/4
(1 13/12-1 10/12) х=3/4
3/12*х=3/4
1/4*х=3/4
х=3/4:1/4
х=3