Question

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

Answer 1

Answer:

2 2+3 1=k

4+3=k

k=7

3 2+1=k

6+1=k

k=7

Answer 2

Answer:

2x + 3y = k

2×2 + 3×1 = k

4 + 3 = k

7 = k

3x + y = k

3×2 + 1 = k

6 + 1 = k

7 = k

Thus, k = 7

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