300道分数计算题,加减法就好了,带答案,不要一步的,用递等式的.

3/4-4/3=7/12
1-1/9=8/9 3/4+1/5=4/5 3/4-1/5=11/20 5/6+2/9=19/18 5/6-2/9=11/18 2/3+3/5=19/15
2/3-3/5=1/15 6/7+1/2=19/14 6/7-1/2=5/14 2/3+1/6=5/6 1/3+1/4=7/12
1/3-1/4=1/12 1/5+1/7=12/35 1/5-1/7=2/35 1/4+1/9=13/36 1/4-1/9=5/36
1/8+1/9=17/72 1/8-1/9=1/72 1/10+7/9=79/90 5/7-1/6=23/42 1-5/9=4/9
1/5+3/8=23/40 3/4+1/5=19/20 2/3-3/5=1/5 1-2/5=3/5 5/8-1/9=37/72
1/10-1/20=1/20 1/6+3/8=13/24 5/9-1/2=1/18 2/3+1/4=11/12 1/2+1/3=5/6
1/2-1/3=1/6
3/8+7/10+5/8=17/10 7/8-(1/8+3/4)=0 4/7+1/6-4/7=1/6
2-7/9-2/9=1 3/5+7/8+2/5=15/8 7/9-(1/9+1/3)=1/3
1/4+(2/5+3/4)=7/5 5/6-3/10+1/6-7/10=0 3/4+1/6-2/3=1/4
7/8-1/4+4/9=77/72 1-1/3+2/7=20/21 1/2+4/5-3/10=1
5/6-(2/3-1/9)=5/18 9/10-(3/4+1/8)=1/40 1/2+2/3-3/4=5/12
7/8-1/6+1/4=23/24 1-(3/4-2/9)=17/36 9/10-1/5-1/2=1/5
1/4+3/7+1/2=33/28 7/8-(2/3+1/6)=1/24 1-(1/3+3/5)=1/15
1/2+1/4+1/3=13/12 7/8+1/4+1/2=5/8 5/7-(4/7+1/9)=2/63
1-1/4-1/2=1/4 3/4-1/6-1/3=1/4 3/10+1/4+2/5=19/20
2/3+1/6+1/12=11/12 1-1/4-2/5=7/20 1/2+1/9+1/12=25/36太少了3/4+1/5=4/5 3/4-1/5=11/20 5/6+2/9=19/18 5/6-2/9=11/182/3+3/5=19/152/3-3/5=1/156/7+1/2=19/146/7-1/2=5/142/3+1/6=5/6 1/3+1/4=7/121/3-1/4=1/121/5+1/7=12/35 1/5-1/7=2/351/4+1/9=13/361/4-1/9=5/361/8+1/9=17/72 1/8-1/9=1/721/10+7/9=79/90 5/7-1/6=23/42 1-5/9=4/91/5+3/8=23/403/4+1/5=19/20 2/3-3/5=1/5 1-2/5=3/55/8-1/9=37/721/10-1/20=1/201/6+3/8=13/245/9-1/2=1/18 2/3+1/4=11/121/2+1/3=5/65/6+1/18=8/93/5-1/3=4/1517/15-1/3=4/5 11/12-2/3=1/4 1/2-1/4=1/41/7-1/8=1/56 1/3-1/9=2/95/6-1/2=1/3 1-2/3=1/35/8-1/6=11/241/3+1/6=1/2 3/4-1/2=1/4 1/5+1/8=13/40 5/6+4/9=23/185/9-2/5=7/453/7+5/2=41/14 5/8+9/10=61/40 11/12-8/15=23/60 1/4+1/6=5/121/4-1/6=1/12 现在够了吗？