16X*2=(90-X)*10怎么解方程?
问题描述：
16X*2=(90-X)*10怎么解方程?
答
16x*2=(90-x)*10
32x=900-10x
32x+10x=900
42x=900
x=150/7
答
16X=(90-X)*5
16X=450-5X
21X=450
X=150/7
答
16X*2=(90-X)*10
32X=900-10x
42X=900
x=900/42约等于21.43