Question

решите уравнение способом сложения ​

Answer 1

$\displaystyle\bf\\\left \{ {{2x-5y=10} \atop {x-6y=-2} \ |\cdot(-2)} \right. \\\\\\+\left \{ {{2x-5y=10} \atop {-2x+12y=4}} \right. \\----------\\7y=14\\\\y=2\\\\x=6y-2=6\cdot 2-2=12-2=10\\\\Otvet: \ (10 \ ; \ 2)$