一道英语数学题求解!～急着!
问题描述：
一道英语数学题求解!～急着!
Find the width of a rectangle if its perimeter is 336 centimeters and its width is 14 centime- ters less than its length
答
长+宽=336÷2=168
长-宽=14
所以
宽=（168-14）÷2=154÷2=77厘米Demand p = 94 − 0.06x Supply p = 20 + 0.8x采纳后重新求助，而且写清楚。