1/4+7/10-1/5=1/4*10=10/40
7/10*4=28/40
1/5*8=8/40
10/40+28/40+8/40=1целая 6/40=1целая 3/20
0,25+0,7-0,2=0,95-0,2=0,75
1/4+7/10-1/5=1/4*10=10/40
7/10*4=28/40
1/5*8=8/40
10/40+28/40+8/40=1целая 6/40=1целая 3/20
0,25+0,7-0,2=0,95-0,2=0,75