用加减消元法解二元一次方程组方程组4x+3y=6和2x-y=4

2024-12-03 12:13:48
推荐回答(1个)
回答1:

将2x-y=4扩大两倍:4x-2y=8①
4x+3y=6②
②-①:5y= - 2 y= - 2/5
x=9/5