满足2x-3y=11-4m和3x+2y=21+5m的x,y,也满足x+3y=10+7m求m

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 20:55:16

满足2x-3y=11-4m和3x+2y=21+5m的x,y,也满足x+3y=10+7m求m
满足2x-3y=11-4m和3x+2y=21+5m的x,y,也满足x+3y=10+7m求m

满足2x-3y=11-4m和3x+2y=21+5m的x,y,也满足x+3y=10+7m求m
2x-3y=11-4m①
3x+2y=21+5m②
x+3y=10+7m③
①+③,得3x=21+3m,x=7+m
①*2+②*3,得13x=22-8m+63+15m,13x=85+7m
13(7+m)=85+7m
91+13m=85+7m
5m=-6
m=-6/5

M=-1/6

x+3y=10+7m 和2x-3y=11-4m相加得到x=7+m代入3x+2y=21+5m得到21+3m+2y=21+5m所以y=m
代入最后一个：7+m+3m=10+7m.所以m=-1
x=6，y=-1

已知满足方程2x-3y+4m=11和3x+2y+5m=21的x,y满足x+3y+7m=20,那么m的值为( ).A0 B1 C2 D3 （初一二元一次方程问题）已知满足2x-3y=11-4m和3x+2y=21+5m的x、y,也满足x+3y=10+7m,求m. 满足2x-3y=11-4m和3x+2y=21+5m的x,y,也满足x+3y=10+7m求m 求助一道二元一次方程题已知满足2X-3Y=11-4M和3X+2Y=21+5M的X,Y也满足X+3Y=10+7M,求M的值 Help!Help!Help me!已知满足2x-3y=11-4m和3x+2y=21-5m的x,y满足x+3y=20-7m,求m的值. 已知满足2x-y=11-4m和x+3y=20-7m的x y也满足3x+2y=21-6m 求m的值 关于x和y的不等式组{3x+2y=3m+3,4x+3y=4m-3的解满足x+y 方程组y-2x=m和5x-2y=1+m中,x与y满足x-y>3,则m的取值范围? 关于X,Y的方程组3X+2Y=2m+5与x-y=4m-5的解x,y满足x+2y 已知X和Y满足3X+4Y=2,X-Y-1/7 已知x和y满足3x+4y=2,x-y 若方程组x+y=3m和x-y=5m的也满足2x-3y=11,则m2-2m+1= 如果2x-3y=11-4m和x+3y=20-7m的x、y也满足3x+2y=21-5m,那么m的值是? 已知2x-3y=11-4m和3x+2y=21-5m的x,y也满足x+3y=20-7m,求 m值 若方程组{x+y=4m和x-y=2m的解满足方程3x-4y=2,求m的值. 已知满足x-2y=m-4和3x+2y=3m的x,y也满足x+4y=2m+3,那么m= 已知方程式x+2y=m+1和4x+3y=m-1中：1.若x、y满足x-y>0,求m的范围.2.x、y均为负数,求m的范围. 已知x.y满足2x-y=3m,x+2y=4m+5,且x+y=0,求m的值