Решите.
1/3+1/4=
2/3-2/5=
1/5-1/6=
1/2+1/4=
7/6-1=
1/2+2/7=
1/2-1/3=
3/4+1/8=
5/6-7/12=
2/5+3/10=
1/3-1/6=
3/20+3/4=
7/9-2/3=
1/4+1/5=
2/5+4/15=

1/3+1/4=4/12+3/12=7/122/3-2/5=10/15-6/15=4/151/5-1/6=6/30-5/30=1/301/2+1/4=2/4+1/4=3/47/6-1=1/1=11/2+2/7=7/14+4/14=11/141/2+1/3=3/6+2/6=5/63/20+3/4=3/20+15/20=18/203/4+1/8=6/8+1/8=7/85/6-7/12=10/12-7/12=3/12=1/42/5+3/10=4/10+3/10=8/101/3+1/6=2/6+1/6=3/6=1/27/9-2/3=7/9-6/9=1/91/4+1/5=5/20+4/20=9/202/5+4/15=6/15+4/15=10/15