Odpowiedzi

2009-12-06T20:34:45+01:00
1. =(9/4-5/3):(3/18+4/18)=(27/12-20/12):7/18=7/12×18/7=18/12
2.=5/7×14/3+5/6×9/10=10/3+15/10=20/6+9/6=29/6
3.=10-11/6×9/2=10-33/4=1 i3/4
2009-12-06T20:34:53+01:00
2i 1/4 - 1 i 2/3):(1/6+2/9)=
= (9/4 -5/3): (3/18 + 4/18)=
=( 27/12 - 20/12 ):(7/18)=
= (7/12)*(18/7) =
= 3/2

5/7 ×4 i 2/3 +5/6 :1 1/9 =
= 5/7 *14/3 + 5/6 *9/10=
= 10/3 + 3/4=
= 40/12 + 9/12=
= 49/12
= 4 i 1/12

10- 1i 5/6 × 4 i 1/2 =
= 10 -11/6 *9/2=
= 10 - 33/4=
= 40/4 -33/4=
= 7/4=
= 1 i 3/4
2009-12-06T20:46:32+01:00
(9{4-5}3)÷(3}18+4}18)=(27}12-20}12)÷7}18=7}12÷7}18=7}12×18}7=18}12=3}2=1 cała i 1}2

5}7×14}3+5}6÷10}9=10}3÷25}27=10}3×27}25=270}27=10}1=10

10-11}6×9}2=10}1-99}12=120}12-99}12=21}12=1 cała i 9}12=1 cała i 3}4