Răspunsuri

2014-10-04T22:24:39+03:00
a)
(36*24+36*40)+(64*96-64*66)/30=
(36(24+40))+(64(96-66))/30=
36x64+64x30/30=
36x64+64=
64(36+1)=
64x37=
2368

b)
99*101*75+25*9999-999900+1997=

9999*75+25*9999-999900+1997=
9999*(75+25-100)+1997=
9999*0+1997=
1997

 c)
19+81*732+19*366*2-4*25*372=
19(1+366*2)+81*732-4*25*372=
19*733+81*732-4*25*372=
19*732+19+81*732-
-4*25*372=
732(19+81)+19-4*25*372=
732*100+19-372*100=
100*(732-372)+19=
100*360+19=
36000+19=
36019

daca este corect poti sa dai cel mai bun
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2014-10-04T23:19:35+03:00
A). (36*24+36*40)+(64*96-64*66)/30= (36(24+40))+(64(96-66))/30= 36x64+64x30/30= 36x64+64= 64(36+1)= 64x37= 2368; b). 99*101*75+25*9999-999900+1997= 9999*75+25*9999-999900+1997= 9999*(75+25-100)+1997= 9999*0+1997= 1997; c). 19+81*732+19*366*2-4*25*372= 19(1+366*2)+81*732-4*25*372= 19*733+81*732-4*25*372= 19*732+19+81*732--4*25*372= 732(19+81)+19-4*25*372= 732*100+19-372*100= 100*(732-372)+19= 100*360+19= 36000+19= 36019; ai răspunsul pt a, b si c
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