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Find the value of k, if x = 2, y = 1 is a solution of the equation 2x+3y = k. Q.4

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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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  1. 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.

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