若x/2=y/3=z/4≠0,则(2x-y+4z)/3y的值为_______.
问题描述:
若x/2=y/3=z/4≠0,则(2x-y+4z)/3y的值为_______.
答
设x = 2k,y = 3k,z = 4k
代入得原式 = (4k - 3k + 16k)/(9k)= 17/9正确吗?哪里不正确呢