(120-50x)/5=(50x-5x)/(50+5)+(120-50x)/50 求结果
问题描述:
(120-50x)/5=(50x-5x)/(50+5)+(120-50x)/50 求结果
答
(120-50x)/5=(50x-5x)/(50+5)+(120-50x)/50
24-10x=9x/11+(12-5x)/5
两边乘55
1320-550x=45x+132-55x
450x=1188
x=66/25