Question

if x=2 y=1 is a solution of the equation 2x + 3y -k =0 find the value of k​

Answer 1

Answer:

k=7

Step-by-step explanation:

X=2

y=1

So, 2(2)+3(1)-k=0.

=4+3-k=0

7-k=0.

-k=-7

k=7

Answer 2

Answer:

k = 7

Step-by-step explanation:

Given :

x = 2 , y = 1 is a solution of the equation 2x + 3y - k = 0

To find :

the value of k

Solution :

Put x = 2 and y = 1,

2x + 3y - k = 0

2(2) + 3(1) - k = 0

4 + 3 - k = 0

7 - k = 0

k = 7

Therefore, the value of k is 7.

Verification :

2x + 3y - k = 0

2(2) + 3(1) - 7 = 0

4 + 3 - 7 = 0

7 - 7 = 0

0 = 0

LHS = RHS

Hence verified!