Question

If 1/x + 1/3х = 5, what is the value of 3x/4

Answer 1

Explanation:

`(1)/(x)+(1)/(3x)=5\\\\(1*3)/(x*3)+(1)/(3x)=5\\\\(3)/(3x)+(1)/(3x)=5\\\\(4)/(3x)=5\\\\4=5*3x\\\\4=15x\\\\(4)/(15)=x`

x = 4/15

`(3)/(4)x=(3)/(4)*(4)/(15)\\\\=(1)/(5)`