Question

Помогите решить систему: $\left \{ {{11x-5y=37} \atop {4y-x=25}} \right.$

Answer 1

11x -5y = 37
4y - x = 25
====
11(4y - 25) - 5y = 37
x = 4y - 25
====
44y - 275 - 5y = 37
x = 4y - 25
====
39y = 37 + 275
x = 4y - 25
====
39y = 312
x = 4y - 25
====
y = 312 / 39
x = 4y - 25
====
y = 8
x = 4*8 - 25
====
y = 8
x = 7
Ответ: (7 ; 8 )