Question

If x= 1 and y=2 is a solution of the equation 2x+3y =k, then the value of k is
Mark: 

A 5

B 6

C 7

D 8

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Answer 1

Answer:

bro the correct answer is option( C).7

solution

given : if x=2,y=1 is the solution of the equation 2x +3y=k

to find : value of k.

as we have given x=2and y=1 solution of the equation,

We coill substitute these values in the given equation and we get,

2(2)+3(1)=k

= 4+3=k

= k=7

hence , the value of k is 7