已知x-3y=0(y≠0)求2x+5y/3x-2y的值
问题描述:
已知x-3y=0(y≠0)求2x+5y/3x-2y的值
答
x-3y=0
x=3y
2x+5y/3x-2y=6y+5y/9y-2y=11y/7y=11/7
答
x-3y=0 x=3y
2x+5y/3x-2y=11y/7y=11/7