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31 May, 10:10

3x+15-7x=-7 solve for x

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  1. 31 May, 10:16
    0
    3x+15-7x=-7

    Simplify:

    3x+15-7x=-7

    3x+15+-7x=-7

    (3x+-7x) + (15) = - 7 (Combine Like Terms)

    -4x+15=-7

    Subtract 15 from both sides.

    -4x+15-15=-7-15

    -4x=-22

    Divide both sides by - 4.

    -4x/-4=-22/-4

    x=11/2
  2. 31 May, 10:37
    0
    You can combine like terms: (3x and - 7x)

    -4x+15=-7

    now, we subtract 15 from both sides:

    -4x=-22

    finally, we divide both sides by - 4

    x=5.5 or 5 1/2
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