Verified answer

[tex]\displaystyle\bf\\ + \left \{ {{2x + 3y = 8} \atop {5x - 3y = - 1 }} \right. \\ \\ 2x + 5x = 8 - 1 \\ 7x = 7 \\ x = 7 \div 7 \\ x = 1 \\ \\ 2 \times 1 + 3y = 8 \\ 2 + 3y = 8 \\ 3y = 8 - 2 \\ 3y = 6 \\ y = 6 \div 3 \\ y = 2 [/tex]

Ответ: ( 1 ; 2 )