\[ 5y + 3y = 48 + 72 \]
\[ 8y = 120 \]
\[ y = \frac{120}{8} \]
\[ y = 15 \]
\[ x - 961 = \frac{3975}{53} \]
\[ x - 961 = 75 \]
\[ x = 75 + 961 \]
\[ x = 1036 \]
Ответ: y = 15, x = 1036