(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
28/3105
答
(120-50X)/5 =(50X-5X)/(50+5)+(120-50X)/50
(120-50X)/5 =45X/55+(120-50X)/50
24-10X=9X/11+12/5-X
10X-2X/11=24-12/5
109X/11=108/5
X=1188/545
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