Question

поможіт розв'язати дам 25 балов​

Answer 1

$\displaystyle\bf\\\left \{ {{3x + 2y = 6 \: \: | \times 2} \atop {3x - 4 y= 8 }} \right. \\ \displaystyle\bf\\ + \left \{ {{6x + 4y = 12} \atop {3x - 4y = 8 }} \right. \\ \\ 6x + 3x = 12 + 8 \\ 9x = 20 \\ x = \frac{20}{9} \\ x = 2 \frac{2}{9 } \\ \\ 3 \times \frac{20}{9} + 2y = 6 \\ \frac{20}{3} + 2y = 6 \\ 6 \frac{2}{3} + 2y = 6 \\ 2y = 6 - 6 \frac{2}{3} \\ 2y = - \frac{2}{3} \\ y = - \frac{2}{3} \div 2 \\ y = - \frac{2}{3 \times 2} \\ y = - \frac{1}{3}$

Ответ: ( 2 2/9 ; - 1/3 )