3/4X-66=1/5X 这方程怎么解啊
问题描述:
3/4X-66=1/5X 这方程怎么解啊
答
3/4X-66=1/5X
3/4X - 1/5X = 66
11/20X = 66
X = 66 * 20/11 = 120