2x+3y=3k+1 ,
8x-2y=k+3 ,
x+y=6
1式乘4得8x+12y=12k+4
减去二式得14y=11k+1
1,2式分别乘2.3,相加得
28x=9k+11
28y=22k+2
且28x+28y=28*6=168
所以31k+13=168
31k=155
k=5
2x+3y=3k+1 ,
8x-2y=k+3 ,
x+y=6
1式乘4得8x+12y=12k+4
减去二式得14y=11k+1
1,2式分别乘2.3,相加得
28x=9k+11
28y=22k+2
且28x+28y=28*6=168
所以31k+13=168
31k=155
k=5