早教吧 育儿知识 作业答案 考试题库 百科 知识分享

送分的5x+y=7,3x-y=14x-3y=5,4x+6y=146x+7y=5,6x-7y=190.5x-3y=-1,-1/2x+5y=33x-2y=6,2x+3y=174x-2y=14,5x+y=7x-3y=-20,3x+7y=1002x-3y=8,5y-7x=5x-3y=2,2x+y=182a+b=0,4a+3b=6x-3y+20=0,3x-7y-100=02y-8=-x,4x+3y=7

题目详情
送分的
5x+y=7,3x-y=1 4x-3y=5,4x+6y=14 6x+7y=5,6x-7y=19
0.5x-3y=-1,-1/2x+5y=3
3x-2y=6,2x+3y=17 4x-2y=14,5x+y=7 x-3y=-20,3x+7y=100
2x-3y=8,5y-7x=5
x-3y=2,2x+y=18 2a+b=0,4a+3b=6 x-3y+20=0,3x-7y-100=0
2y-8=-x,4x+3y=7
▼优质解答
答案和解析
5x+y=7,3x-y=1=>x=1,y=2
4x-3y=5,4x+6y=14=>x=2,y=1
6x+7y=5,6x-7y=19=>=2,y=-1
0.5x-3y=-1,-1/2x+5y=3=>x=4,y=1
3x-2y=6,2x+3y=17=>x=4,y=3
4x-2y=14,5x+y=7 =>x=2,y=-3
x-3y=-20,3x+7y=100=>x=10,y=10
2x-3y=8,5y-7x=5=>x=-5,y=-6
x-3y=2,2x+y=18=>x=8,y=2
2a+b=0,4a+3b=6=>a=-3,b=6
x-3y+20=0,3x-7y-100=0=>x=220,y=80
2y-8=-x,4x+3y=7 =>x=-2,y=5