Question

find the value of k,if x=2,y=1 is a solution of the equation 2x+3y=k

Answer 1

given x= 2 and y= 1

now we have

2x+3y=k

k=2*2+3*1

k=4+3

k= 7 is your answer

Answer 2

after putting the values of x and y

=(2*2)+(3*1)

=4+3

=7

therefore k=7