解方程:x-2/5X(x-15)=69
问题描述:
解方程:x-2/5X(x-15)=69
答
x-0.4(x-15)=69
0.6x+6=69
0.6x=63
x=105
解方程:x-2/5X(x-15)=69
x-0.4(x-15)=69
0.6x+6=69
0.6x=63
x=105