Question

(1/4X+15):(1-1/4X-15)=2:3 这道题怎么解？

4分之1乘X加15比1-4分之1乘X-15=2:3

Answer 1

(1/4X+15):(1-1/4X-15)=2:3 可转化为3*(1/4X+15)=2*(1-1/4X-15)
展开得：3/4X+45=-2/4X-28
移向合并得：5/4X=-73
得x= - 292/5

Answer 2

内项积等于外项积，求得X等于负的五分之二百九十二

Answer 3

(1/4X+15):(1-1/4X-15)=2:3
X=100

Answer 4

(1/4X+15):(1-1/4X-15)=2:3
2(1-1/4X-15)=3(1/4X+15)
2-1/2x-30=3/4x+45
-3/4x-1/2x=45+30-2
-x=73
x=-73

Answer 5

是4X分之1还是4分之1乘X，写清楚点要不然题没法算。