【3,5】= 【8.12】= 【18,12】= 【2,3,5】= 【14,28】= 【3,6,12】=
如果1=6,2=12,3=18,4=24,5=30,那么6=?
1=6 2=12 3=18 4=24 5=25 6=?
6=3+3 8=3+5 10=3+7=5+5 12=5+7 14=3+11=7+7 16=
化成小数3/2= 7/12= 12/5= 6/1= 2/1= 8/3= 9/5= 5/2= 33/14= 7/3= 9/
1+2+3+4+5+6+7+8+9+10+12+14+16+18+20=?
1+2+3=4+5-3 6+7+8+9=10+11+12-3 13+14+15+16+17=18+19+20+21-3
3X+6=12 40-4X=20 5+6X=35 18=2X-6 20=38-2X = = = = = = = = =
×-12/25=1/5 2×1/6=5/6 2/3-×+1/7=9/14
-14+3+12=?
12-3=___,12-4=___,12-5=___,12-6=___,
4/15×6/8= 3/8÷12= 4/5×5/6= 36×5/18=
3X+5X=48 14X-8X=12 6*5+2X=44