Solve: 2/5=6/x

Question

`Solve: 2/5=6/x`

Answer 1

`x=15`

Explanation:

`(2)/(5)=(6)/(x)\\\\\mathrm{Multiplying\ }x\mathrm{\ on\ both\ sides,}\\\\(2)/(5)(x)=(6)/(x)(x)\\\\\mathrm{or,\ }(2x)/(5)=6\\\\\mathrm{Multiplying\ '5'\ on\ both\ sides,}\\\\(2x)/(5)(5)=6(5)=30\\\\\mathrm{or,\ }2x=30\\\therefore x=15`