Question

11x-2y=14 и 33x+y=70

Answer 1

$left { {{11x-2y=14} atop {33x+y=70|*2}} right.\\+left { {{11x-2y=14} atop {66x+2y=140}} right.$

________

77x=154

x = 154 : 77

x =2

y = 70 - 33x = 70 - 33 * 2 = 70 - 66 = 4

Ответ : (2 ; 4)