Question

{2(x-3)-4(y+7)=1 {3(2-x)+7(y-1)=3
система уравнений, решите плес.

Answer 1

2(x-3)-4(y+7)=1
3(2-x)+7(y-1)=3

2x-6-4y-28=1
6-3x+7y-7=3

2x-4y=1+6+28
-3x+7y=3-6+7

2x-4y=35  |*3
-3x+7y=4  |*2

6x-12y=105
-6x+14y=8

2y=113
y=1132

2x-4*1132=35
2x-226=35
2x=35+226
x=2612
Ответ:(2612;1132)