(2,7-4/5):3/7 ______________ 3,4*1/5= (5,2-1 2/5)*2 1/3

(2,7-4/5):3/7 ______________ 3,4*1/5= (5,2-1 2/5)*2 1/3 (2,7-0,8):3/7 _____________3,4*0,2= (5,2-1,4)*2 1/3 1,9:3/7 ________*0,68= 3,8* 7/3 19/10*7/3 __________*68/100= 38/10*7/3 19/10*10/38 * 7/3*3/7 * 68/100= =1/2*68/100= =34/100= =17/50

(2,7-4/5):3/7 (2 7/10 -8/10):3/7 ______________ 3,4*1/5= ______________3 2/5*1/5 (5,2-1 2/5)*2 1/3 (5 1/5-1 2/5)*2 1/3 133/30 =_______ 17/25= 133/30 : 133/15 *17/25= 1/2 * 17/25 133/15 =17/50 powinno być dobrze, ale pewności nie mam :)