а) 1/4 + 2/3= 3/12 + 8/12=11/12
б)2/6+2/16=16/48+6/48=22/48
в)4/10+2/3=12/30+20/30=32/30
г)4/30+5/12=8/60+25/60=33/60
Д)3/4+1/8=6/8+1/8=7/8
е)7/64+2/40=35/320+16/320=51/320
ж)2/5+4/15=6/15+4/15=10/15
з)5/42+4/6=5/42+28/42=33/42
а) 1/4 + 2/3= 3/12 + 8/12=11/12
б)2/6+2/16=16/48+6/48=22/48
в)4/10+2/3=12/30+20/30=32/30
г)4/30+5/12=8/60+25/60=33/60
Д)3/4+1/8=6/8+1/8=7/8
е)7/64+2/40=35/320+16/320=51/320
ж)2/5+4/15=6/15+4/15=10/15
з)5/42+4/6=5/42+28/42=33/42