Oblicz. UŁAMKI!! PLZ NA JUTRO SPEED DAJE 25 I NAJLEPSZE 2 całe i 1/2 : 5 całych - 1/3= (3 całe i 1/3 + 5/9) :7= ( 1 cała i 4/7 - 1 cała i 1/3) : 10 = ( 5 całych i 1/5 - 2 całe i 3/4): 2 ( (2 całe i 1/2) do potęgi 2 - 3/4) : 11 (2 całe i 1/3 ) do p

1. 2 i 1/2* 1/5-1/3=4/1 * 1/5-1/3=4/5-1/3=4/15 2. 10/3+5/9 :7=30/9+5/9=35/9*1/7=5/9 3. 11/7-4/3*1/10=33/21-28/21*1/10=5/21*1/10=1/42 4. 26/5-11/4*1/2=104/20-55/20*1/2=49/20*1/2=49/40= 1 i 9/40 5. 6 i 1/4-3/4*1/11= 25/4-3/4=22/4*1/11=2/4=1/2 6. 2 i 1/3 ² : 7 - 2/3 = 7/3² : 7 - 2/3 = 49/9 : 7 - 2/3 = 49/9 * 1/7 - 2/3 = 7/9 -  2/3 = 7/9 - 6/9 = 1/9

1).2 i 1/2 : 5 - 1/3 = 5/2 · 1/5 - 1/3 = 1/2 - 1/3 = 3/6 - 2/6 = 1/6 2).(3 i 1/3 +5/9) : 7 = (3 i 3/9 +5/9) : 7 = 3 i 8/9 : 7 = 35/9 · 1/7 = 5/9 3).(1 i 4/7 - 1 i 1/3) : 10 = (1 i 12/21 - 1 i 7/21) : 10 = 5/21 · 1/10 = 1/42 4).(5 i 1/5 - 2 i 3/4) : 2 = (5 i 4/20 - 2 i 15/20) : 2 = (4 i 24/20 - 2 i 15/20) :2 =     =2 i 9/20 : 2 = 49/20 · 1/2 = 49/40 = 1 i 9/40 5).((2 i 1/2)² -3/4) : 11 = ((5/2)²-3/4) : 11 = (25/4 - 3/4) : 11 = 22/4 · 1/11 =    =2/4 = 1/2 6).(2 i 1/3)² : 7 - 2/3 = (7/3)² : 7 - 2/3 = 49/9 · 1/7 - 2/3 = 7/9 - 2/3 =     =7/9 - 6/9 = 1/9