{4x+5y-22=0 7x+11y-43=0
问题描述:
{4x+5y-22=0 7x+11y-43=0
答
4x+5y-22=0
7x+11y-43=0
28x+35y=154
28x+44y=172
9y=18
y=2
4x+10-22=0
4x=12
x=3
x=3
y=2