Question

19. Find the value of k, if x=2, y=1 is a solution of the equation 2x+3y=k​

Answer 1

Step-by-step explanation:

$given \: x = 2 \: \: y = 1 \\ 2x + 3y = k \\ 2 \times 2 + 3 \times 1 = k \\ 4 + 3 = k \\ 7 = k$

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Answer 2

Given equation is 2x+3y=k

According to question x=2,y=1

Now substituting the values of x and y in the equation 2x+3y=k,we get,

(2×2)+(3×1)=k

⇒ 4+3=k

⇒ 7=k

So, k = 7

So, the value of k, if x=2,y=1 is a solution of the equation 2x+3y=k is 7