Question

VA ROG PUNCTELE ÎNCERCUITE , VA ROG REPEDEEEEE DAU COROANA

Answer 1

Răspuns:

c) 7,(3) :11 -0,5 = $\frac{73-7}{9} *\frac{1}{11}$ - $\frac{5}{10}$= $\frac{66}{9} *\frac{1}{11}$  - $\frac{1}{2}$= $\frac{2*3}{3*3} - \frac{1}{2}$= $\frac{2}{3} - \frac{1}{2}$= $\frac{4-3}{6}$= $\frac{1}{6}$

d) 2,(27) :5 + 0,2= $\frac{227-2}{99} *\frac{1}{5}$  + $\frac{1}{5}$= $\frac{225}{3*33} *\frac{1}{5} + \frac{1}{5}$ = $\frac{45}{9*11} + \frac{1}{5}$= $\frac{5}{11} + \frac{1}{5}$=  $\frac{25+11}{55}$= $\frac{36}{55}$

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