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18 February, 02:43

Select all the expressions that are equivalent to - 6 (3x - 7). - 18x - 7 4 - 10 (3x - 7) 4 (3x + 5) - 2 (15x - 11) 6 (3x + 7) 2x - 7 - 5 (4x - 7) - 2 (9x - 21)

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  1. 18 February, 05:50
    0
    Step-by-step explanation:

    Things to know

    -*-=+

    -*+=-

    +*-=-

    +*+=+

    Generally to opening the bracket of the given format

    a (b+c). Using distributive law

    (a*b) + (a*c)

    an+ac

    1. - 6 (3x-7)

    Opening the bracket

    -18x+42

    2. - 18x - 7

    This is already simplify no need to simplify it.

    3. 4 - 10 (3x - 7)

    Opening the bracket

    4-30x+70

    -30x+74

    4. 4 (3x + 5)

    Opening the bracket

    12x+20

    5. - 2 (15x - 11)

    Opening the bracket

    -30x+22

    6. 6 (3x + 7)

    Opening the bracket

    18x+42

    7. 2x - 7

    This is already simplified

    8. - 5 (4x - 7)

    Opening the bracket

    -20x+35

    9. - 2 (9x - 21)

    Opening the bracket

    -18x+42

    Only the number 9 is equal to number 1 given.
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