50X+45(8-X)=375 怎么解
问题描述:
50X+45(8-X)=375 怎么解
答
50X+45(8-X)=375
50x+360-45x=375
50x-45x=375-360
5x=15
x=3
答
50x+360-45x=375
50x-45x=375-360
5x=15
x=5
答
50X+45(8-X)=375
50X+360-45X=375
50X-45X=375-360
5X=15
X=15÷5
X=3