obliczycie tylko nie dawajcie samych wynków plis: a)5 i 1\7 razy 1 i 4\9 -6 :4 i 2\3=
b)3 i 1\2 razy (2 i 1\4 - 1 i 1\2 :6)=
c)5 i 2\9 - 1 1\6 : 3 i 2\3 razy (1 i 1\4 -1\2)=
plis mam to ja juro szybko daje duzo punktów
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a)5 1/7x1 4/9-6:4 i 2/3=36/7x13/9:14/3=52/7x3/14=18/49
b)3 1/2x(2 1/4-1 1/2:6)=7/2x(9/4-3/2x1/6)=7/2x(9/4-1/4)=7/2x8/4=28/4=7
c) 5 2/9-1 1/6 : 3 2/3x (1 1/4-1/2)= 47/9-7/3x3/12x(5/4-1/2)=47/9-7/36x(5/4-3/4)=74/9-7/36x2/4=47/9-7/18x1/4=47/9-7/12=376/72-7/72=369/72=5,125