52. By adding the same number to the numerator and the denominator of the fraction $\frac{11}{41}$, Ira obtained $\frac{3}{8}$ after simplification, while Olya, by subtracting a certain number from the numerator of the fraction $\frac{37}{63}$ and adding it to the denominator, obtained $\frac{3}{17}$. What numbers did the girls add and subtract?
52. Let Ira add the number $x$, then $\frac{11+x}{41+x}=\frac{3}{8}$, from which $88+8 x=$ $=123+3 x, 5 x=35$ and $x=7$. Indeed $\frac{11+7}{41+7}=\frac{18}{48}=\frac{3}{8}$. Let Olya add and subtract the number $y$, then $\frac{37-y}{63+y}=\frac{3}{17}$, from which $629-17 y=189+3 y$; $y=22$. Indeed $\frac{37-22}{63+22}=\frac{15}{85}=\frac{3}{17}$.