1/2+3/5=
3/4+5/8=
4/7+8/9=
5/12+3/4=
3/14+5/7=
5/21+6/7=
5/7+7/8=
8/13+15/39
AC nào làm đc thì làm ạ!! E Ưu tiên các ac lớp 5 ạ.
1/2+3/5=
3/4+5/8=
4/7+8/9=
5/12+3/4=
3/14+5/7=
5/21+6/7=
5/7+7/8=
8/13+15/39
AC nào làm đc thì làm ạ!! E Ưu tiên các ac lớp 5 ạ.
Đáp án:
1/2+3/5= 4/7
3/4+5/8= 9/2
4/7+8/9=13/6
5/12+3/4= 8/52
3/14+5/7=8/84
5/21+6/7=11.19
5/7+7/8=13/5
8/13+15/39= 23/52
Giải thích các bước giải:
Đáp án:
1/2+3/5=5/10+6/10=11/10
3/4+5/8=24/32+20/32=44/32=11/8
4/7+8/9=36/63+56/63=92/63
5/12+3/4=5/12+9/12=14/12=7/6
3/14+5/7=3/14+10/14=13/14
5/21+6/7=5/21+18/21=23/21
5/7+7/8=40/56+49/56=89/56
8/13+15/39=8/13+5/13=13/13=1