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26 January, 00:30

Which number from the set {5, 10, 15, 18} makes the equation true?

2x + 3 (x + 4) = 37

A)

5

B)

10

C)

15

D)

18

+3
Answers (2)
  1. 26 January, 00:51
    0
    Answer

    Letter B

    Step-by-step explanation

    x=10 because

    2x{ 10} + 3 = 23

    X{10} + 4 = 14

    23 + 14 = 37
  2. 26 January, 00:57
    0
    5

    Step-by-step explanation:

    Given the equation 2x + 3 (x + 4) = 37, to find x we will make x the subject of the formula. To do that, we need to first open the bracket of the equation to have;

    2x+3x+12=37

    5x+12 = 37

    Taking + 12 to the other side of the equation will change the sign to negative i. e - 12 to give;

    5x = 37-12

    5x = 25

    Dividing both sides the coefficient of x which is 5, we will have;

    5x/5 = 25/5

    x = 5

    Since 5 is an element of the given set, 5 is therefore the element of the set that makes the equation true.
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