Question

The value of k=? when x=1,y=5 is the solution of equation kx+3y =20​

Answer 1

Given:-

$x = 1 \\ y = 5 \\ k = ?$

Equation:-

$\underbrace{kx + 3y = 20}$

Put Value of given terms:--

$\red{k + 15 = 20} \\ \blue{ \boxed {k = 5}}$