Question

if x/y=3/5 then the value of 3x-y/2x+3y is ______​

Answer 1

Answer:

$\frac{x}{y} = \frac{3}{5} \\ 5x = 3y$

$x = \frac{3y}{5}$

$\frac{3x - y}{2x + 3y} = \frac{3 \times \frac{3y}{5} - y }{2 \times \frac{3y}{5} + 3y } = \frac{ \frac{9y}{4} - y }{ \frac{6y}{5} + 3y }$

$\frac{ \frac{9y - 5y}{5} }{ \frac{6y + 15y}{5} } = \frac{ \frac{4y}{5} }{ \frac{21y}{5}} = \frac{4y}{21y} = \frac{4}{21}$