(2i 1/4 - 1 i 2/3):(1/6+2/9)= 5/7 ×4 i 2/3 +5/6 :1 1/9 = 10- 1i 5/6 × 4 i 1/2 =

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

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

(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