求满足方程组:{2x-y-4m=0,14x-3y-20=0中
问题描述:
求满足方程组:{2x-y-4m=0,14x-3y-20=0中
的y的值是x值的3倍的m的值,并求x,y的值
答
2x - y - 4m = 0
14x - 3y - 20 = 0
y = 3x
x = 4 ,y = 12 ,m = -1