Дана система линейных уравнений:

\(\displaystyle \begin{array}{rl} \left\{ \vphantom{\begin{aligned} 1\\ {\small \frac{2}{3}} \end{aligned}} \right.&\kern{-1.5em} \begin{aligned} {\small \frac{3}{10}}s+{\small \frac{21}{10}}t=&{\small -\frac{53}{10}},\\ {\small \frac{7}{12}}s+{\small \frac{11}{12}}t=&-3 {\small .}\end{aligned} \end{array}\)

Умножьте первое уравнение на \(\displaystyle 10,\) а второе на \(\displaystyle 12{\small : }\)

\(\displaystyle \left\{ \vphantom{\begin{aligned} 1\\[5px] 1 \end{aligned}} \right. \)	[ ]\(\displaystyle =\)[ ],
	[ ]\(\displaystyle =\)[ ].