解方程:300x+150(50-x)+200(42-x)+150(x-2)=1600
问题描述:
解方程:300x+150(50-x)+200(42-x)+150(x-2)=1600
答
300x+7500-150x+8400-200x+150x-300=1600
100x+15600=1600
100x=-14000
x=-140