{5(x-3y)-6=2x+1 3(x+6y)+4=9y+19
问题描述:
{5(x-3y)-6=2x+1 3(x+6y)+4=9y+19
答
5(x-3y)-6=2x+1 3
5X-15Y-6=2X+13
3X-15Y=19
(X+6Y)+4=Y+19
x+6y+4=9y+19
x-3y=15
解得X=28 y=13/3