1/4*10+3,5=10/4+7/2=10/4+14/4=24/4=6
2 1/2:0,5+3,6=5/2 : 1/2 +3,6 = 5/2 * 2 +3,6 = 5+3,6=8,6
7/10:0,2-0,5 = 7/10:2/10-0,5=7/10*10/2-0,5 = 7/2-1/2=6/2=3
1/4*10+3,5=10/4+7/2=10/4+14/4=24/4=6
2 1/2:0,5+3,6=5/2 : 1/2 +3,6 = 5/2 * 2 +3,6 = 5+3,6=8,6
7/10:0,2-0,5 = 7/10:2/10-0,5=7/10*10/2-0,5 = 7/2-1/2=6/2=3