1) 7X-8Y=10
Y=-7/2X+25
2) 1/5X+7/5Y=17/5
7/6X-1/2Y=-37/6
3) 8X+3Y=-13
4X-3Y=25
Solve the systems by substitution?
2012-07-10 4:41 am
回答 (1)
2012-07-10 4:42 am
plug one equation into the other one
收錄日期: 2021-04-20 22:55:59
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https://hk.answers.yahoo.com/question/index?qid=20120709204145AAFqmeJ