1)2/7*3= 2)4/5*5= 3)9*4/27= 4)24*1/8= 5)15/16:3= 6)1/2:12= 7)5/8:8= 8)1/10:1000= 9)(1/3+1/4)*6= 10)7/10-1/5):5=

1)2/7*3=2/7*3/1==6/7; /// 2)4/5*5=4/5*5/1=4; /// 3)9*4/27=9/1*4/27=4/3=1 1/3;/// 4)24*1/8=24/1*1/8=3; /// 5)15/16:3=15/16*1/3=5/16; // 6)1/2:12=1/2*1/12=1/24; /// 7)5/8:8=5/8*1/8=5/64; /// 8)1/10:1000=1/10*1/1000=1/10000; /// 9)(1/3+1/4)*6=(4/12+3/12)*6=7/12*6/1=7/2=3ц 1/2; /// 10)7/10-1/5):5= (7/10-2/10)*1/5=5/10*1/5=1/10;