y=2x-5 ③
将③代入②中得
3x+2(2x-5)=-3
解得x=1
将x=1代入③中,得
y=-3
猜你喜欢
- 1飞机的升力原理
- 2实验中,为什么要计算全班各组的平均值
- 3What`s the different between A and B 还是What`s the difference between A and
- 4Students read English loudly.It is improtant.合并为一句It is important ()()()read loudly.
- 5It was in the factory----his father worked for 10 years ----i met Mary for the first time.
- 6They lived over sixty thousand years ago.同义句
- 7他昨天头疼得厉害,所以医生叫他吃一点西药 英文翻译
- 8数学里上凹,下凹,上凸,下凸分别是什么 4种情况求解释
- 9有5袋洗衣粉,其中4袋为500g,另有一袋不是500g,但不知道是比500g重还是轻,至少用天平秤几次才能找到?
- 10小明,小刚,小华共有邮票80张每人有邮票的比是2:3:5,老师多奖励他们100张邮票,使他们邮票一样多