New 55% Off on All Courses - Enroll Now! Click Here

    Question

    Find the value of ‘x’ in the given

    expression (49/16)x× (64/343)x-1= 4/7
    A 4 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 2 Correct Answer Incorrect Answer
    D -2 Correct Answer Incorrect Answer

    Solution

    (49/16)x× (64/343)(x-1) = 4/7 ⇒(7/4)2x× (4/7)(3x-3) = 4/7 ⇒(4/7)(-2x)× (4/7)(3x-3) = 4/7 ⇒ -2x+3x-3=1 ⇒ x = 4

    Practice Next

    Relevant for Exams: