解方程组5(x-1)=y+5 5(y-1)=3(x+5)
问题描述:
解方程组5(x-1)=y+5 5(y-1)=3(x+5)
要全过程,谢了!
答
5(x-1)=y+5 ①
5(y-1)=3(x+5) ②
由①得y=5x-10 ③
将③代入②得 5(5x-10-1)=3(x+5)
25x-55=3x+15
22x=70
x=35/11
y=65/11