Question

Допоможіть будь ласка з алгеброю.

Answer 1

$\displaystyle\bf\\\left \{ {{3(2-4y)-5(2x-3)=37} \atop {4(3x-5)-(5+2y)=}5} \right. \\\\\\\left \{ {{6-12y-10x+15=37} \atop {12x-20-5-2y=5}} \right. \\\\\\\left \{ {{-10x-12y=37-6-15} \atop {12x-2y=5+20+5}} \right. \\\\\\\left \{ {{-10x-12y=16 \ |:(-2)} \atop {12x-2y=30|:2 \ }} \right. \\\\\\\left \{ {{5x+6y=-8} \atop {6x-y=15}} \right. \\\\\\\left \{ {{y=6x-15} \atop {5x+6\cdot(6x-15)=-8}} \right. \\\\\\\left \{ {{y=6x-15} \atop {5x+36x-90=-8}} \right.$

$\displaystyle\bf\\\left \{ {{y=6x-15} \atop {41x=82}} \right. \\\\\\\left \{ {{x=2} \atop {y=6\cdot 2-15}} \right. \\\\\\\left \{ {{x=2} \atop {y=-3}} \right. \\\\\\Otvet \ : \ (2 \ ; \ -3)$