Hisoblang: $\dfrac{0{,}7\cdot\frac{5}{3}+0{,}7\cdot\frac{9}{5}}{1{,}3\cdot\frac{14}{\frac{9}{3}}}$.
- A. $\dfrac{2}{5}$
- B. $\frac{4}{5}$
- C. $\frac{3}{4}$
- D. $1$
Javob: $\dfrac{2}{5}$
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