Ma ajutati ,va rog la aceste exerciti ?!
a)25,3+0,7-21,(83)-16\99=....?
b)2,71-0,8(2)+1,2(5)+1intreg3\5-0.65(4)=.......?
si..
2la puterea-1=...
(-1.2)la puterea3=....
.......VA rog!....

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ma ajutati va rog care stiti? macar unul

Răspunsuri

Cel mai inteligent răspuns!
2014-08-28T22:26:10+03:00
A)25.3+0.7-21.9830- \frac{16}{99} =4
1)25.3+0.7=26
2)- 21\frac{83}{99} - \frac{16}{99} =- \frac{2178}{99} =-22
3)26-22=4

b)2.71-0.8(2)+1.2(5)+ 1\frac{3}{5} -0.65(4)= \frac{271}{100}- \frac{80}{90} + \frac{120}{90} + \frac{8}{5} - \frac{650}{900}= \frac{2439-800+1200+1120-650}{900}  = \frac{3309}{900} =3 \frac{609}{900}


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