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4 July, 02:29

What is the value of x?

x-3/7=4

Must enter answer in simplest form

x = ?

+3
Answers (1)
  1. 4 July, 02:32
    0
    x = 31/7

    Step-by-step explanation:

    Solve for x:

    x - 3/7 = 4

    Put each term in x - 3/7 over the common denominator 7: x - 3/7 = (7 x) / 7 - 3/7:

    (7 x) / 7 - 3/7 = 4

    (7 x) / 7 - 3/7 = (7 x - 3) / 7:

    (7 x - 3) / 7 = 4

    Multiply both sides of (7 x - 3) / 7 = 4 by 7:

    (7 (7 x - 3)) / 7 = 7*4

    (7 (7 x - 3)) / 7 = 7/7 * (7 x - 3) = 7 x - 3:

    7 x - 3 = 7*4

    7*4 = 28:

    7 x - 3 = 28

    Add 3 to both sides:

    7 x + (3 - 3) = 3 + 28

    3 - 3 = 0:

    7 x = 28 + 3

    28 + 3 = 31:

    7 x = 31

    Divide both sides of 7 x = 31 by 7:

    (7 x) / 7 = 31/7

    7/7 = 1:

    Answer: x = 31/7
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