Question

3x+1/5+2y-1/3=2/5
3x-2/2+y-3/4=1 система уравнений

Answer 1

Ответ:

$\left \{ {{\frac{3x+1}{5} +\frac{2y-1}{3}=\frac{2}{5} } \atop {\frac{3x-2}{2} + \frac{y-3}{4} = 1}} \right. \\\\\left \{ {{3(3x+1) + 5(2y-1) = 6} \atop {2(3x-2) + y-3 = 4}} \right. \\\left \{ {{9x+3+10y-5=6} \atop 6x-4+y-3=4}} \right.$

$\left \{ {{9x+10y=8} \atop {6x + y=11}} \right. \\\left \{ {{9x+10y=8} \atop {y=11-6x}} \right. 9x+10(11-6x)=8\\9x+110-60x=8\\-54x=-102\\\\x=\frac{102}{54}\\x=\frac{17}{9} \\y=11-6*\frac{17}{9}\\ y=11-8,5\\y=2,5$

Ответ: (17/9;2,5)

Объяснение: