Question

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

Answer 1

Answer:

$2x + 3y = k \\ if \: \: x = (2) \: \: and \: \: y = (1) \\ \\ 2(2) + 3(1) = k \\4 + 3 = k \\ 7 = k \\ \\ \\ k = 7$

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Answer 2

Given :-

Value of x = 2

Value of y = 1

To Find :-

The value of k.

Analysis :-

Substitute the value of x and y in the given equation.

Then you can easily find the value of k accordingly.

Solution :-

Given equation,

2x + 3y = k

Values that,

x = 2 and y = 1

Substituting them,

(2×2) + (3×1) = k

4 + 3 = k

7 = k

Value of k = 7

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