Oblicz.: a) 4 i 5/9 + 2 i 1/3 * 4 i 1/2= (PEŁNE OBLICZENIA) b) 5 i 1/7 * 1 i 4/9 - 6 : 4 i 2/3 = c) 3 i 1/2 * (2 i 1/4 - 1 i 1/2 :6) =
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a) 4 i 5/9 + 2 i 1/3 * 4 i 1/2=4 5/9+7/3*9/2=4 5/9+21/2=4 5/9+10 1/2=
4 10/18+10 9/18=14 19/19=15 1/18
b) 5 i 1/7 * 1 i 4/9 - 6 : 4 i 2/3=36/7*13/9-6:14/3=52/7-6*3/14=7 3/7-9/7=
7 3/7-1 2/7=6 1/7
c) 3 i 1/2 * (2 i 1/4 - 1 i 1/2 :6) =7/2*(2 1/4-3/2*1/6)=7/2*(2 1/4-1/4)=7/2*2=7
a) 4 i 5/9 + 2 i 1/3 * 4 i 1/2=41/9 + 7/3 * 9/2 = 41/9 + 21/3 = 41/9 + 63/9 = 104/9= 11 całych 5/9
b) 5 i 1/7 * 1 i 4/9 - 6 : 4 i 2/3 =36/7 * 13/9 - 6 : 14/3= 52/7 - 6 *3/14 = 52/7 - 6/7 = 46/7 = 6całych 4/7
c) 3 i 1/2 * (2 i 1/4 - 1 i 1/2 :6) =7/2 * (9/4 - 3/2 : 6)= 7/2*(9/4 - 3/2 *1/6)= 7/2*(9/4-1/4)= 7/2 * 8/4= 28/4= 7