Question

Find the value of K if x=2 y=1 is a solution of the equation 2x +3y =k
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Answer 1

Answer:

7

Explanation:

2*2 + 3*1 = 4 + 3 = 7

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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