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ex 4
66/11+77/11+5/10-8/5=?
va rog repede dau coroana


Răspuns :

66/11 + 77/11 + 5/10 - 8/5 = 6/1 + 7/1 + 5/10 - 16/10 = 13/1 + 5/10 - 16/10 =
= 130/10 + 5/10 - 16/10 = 135/10 - 16/10 = 119/10
[tex] \frac{66}{11} [/tex] + [tex] \frac{77}{11} [/tex] + [tex] \frac{5}{10} [/tex] - [tex] \frac{8}{5} [/tex] = 6 + 7 + [tex] \frac{5}{10} [/tex] - [tex] \frac{16}{10} [/tex] = 
= 13  - [tex] \frac{11}{10} [/tex] = 13 - 1,1 = 11,9