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28 March, 14:21

5x+3x=5x+15/2 what value 3x make the equation true

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  1. 28 March, 14:37
    0
    We need to get the 3x alone so

    5X+3X=5X+15:2

    (:5x) 3X=5X+7.5 (:5X)

    (:3) X=7.5 (:3)

    X=7.5:3

    X=2. s
  2. 28 March, 14:37
    0
    Subtract 5x from both sides. You'll get 3x=15/2

    Turn 15/2 into a mixed number. 7 1/2

    Divide 3 both sides.

    Answer: 2 1/2

    Check your work.

    5*2 1/2 = 12.5 3*2 1/2 = 7.5

    Therefore 12.5+7.5=12.5+7.5

    12.5+7.5=20

    Therefore the answer is 2.5 or 2 1/2
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