Решите: 3/7+0,4; 6/11-0,3; 0,8-5/6; 0,6+2/9

Question

Решите: 3/7+0,4; 6/11-0,3; 0,8-5/6; 0,6+2/9

Answer 1

3/7+4/10=30/70 + 28/70=58/70= 29/35
6/11-3/10=60/110-33/110=27/110
8/10-5/6=48/60-50/60=-2/60=-1/30
6/10+2/9=54/90+20/90=74/90=37/45

Answer 2

3/7+0,4=3/7+2/5=15/35+14/35=29/35-первое
6/11-0,3=6/11-3/10=60/110-33/110=27/110-второе
0,8-5/6=4/5-5/6=24/30-25/30=  -1/30-третье
0,6+2/9=3/5+2/9=27/45+10/45=37/45-четвертое)))