Question

1281 (1) решить даю 14 балов

Answer 1

X-4y/5-x-5y/6=o
3x+y/2+x+10y/3=2
6(x-4y)-5(x-5y)=30
6x-24y-5x+25y=30
x+y=30  x=30-y
3(3x+y)+2(x+10y)=18
9x+3y+2x+20y=18
11x+23y=18
11(30-y)+23y=18
330-11y+23y=18
330-2y=18
-2y=-330+18
-2y=-312
y=156
x=30-156
x=-126