Question

If x/5= y/3 Then 3x+5y​

Answer 1

Hey there !

→$\frac{x}{5 } =\frac{y}{3}$

∴ ${x} = 5 *\frac{y}{3}$   -------- (1)

→ $3x + 5y =?$ ----------(2)

• Now substitute (1) in (2) :

$\ }(3*\frac{5y}{3} )} + 5y \\\\= \frac{15}{3} + 5y\\\\=\frac{15y+15y\\}{3}\\\\=\frac{30y}{3} \\\\=10y$