MOSCOW, The dollar-to-ruble exchange rate at the opening of trading on the Moscow Exchange decreased by 22.5 kopecks compared to the closing level of previous trading session and amounted to 90.37 rubles. There were no transactions on the euro at the beginning of trading. In turn, the yuan-to-ruble rate increased by 1.5 kopecks to 12,548 rubles. Source: Syrian Arab News Agency