Find the easiest and simplest solution of ncert class 9th of the chapter linear equations in two variables of exercise 4.2 . How i solve this question in a easiest and simplest way give me the best solution of this question.Find the value of k, if x = 2, y = 1 is a solution of the equation 2x+3y = k.
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Solution:
The given equation is
2x+3y = k
According to the question, x = 2 and y = 1.
Now, Substituting the values of x and y in the equation2x+3y = k,
We get,
(2×2)+(3×1) = k
⟹ 4+3 = k
⟹ 7 = k
k = 7
The value of k, if x = 2, y = 1 is a solution of the equation 2x+3y = k, is 7.