Вычислите 1/4+3/5; 9/11-2/5; 13/16-9/32; 3/28+5/14; 14/15-7/10; 3/8+1/6.

1/4+3/5=5/20+12/20=17/20=1целая 3/20 9/11-2/5= 45/55-22/55=23/55 13/16-9/32=26/32-9/32= 17/32 3/28+5/14=13/28 14/15-7/10=28/30-21/30=7/30 3/8+1/6= 9/24+4/24=13/24