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22 September, 15:12

Owing each step. Wri

7 (m + 5) = 21

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Answers (2)
  1. 22 September, 15:29
    0
    m=-2

    Step-by-step explanation:

    7 (m+5) = 21

    m+5=21/7

    m+5=3

    m=3-5

    m=-2
  2. 22 September, 18:41
    0
    7 (m + 5) = 21

    multiply the bracket by 7

    (7) (m) = 7m

    (7) (5) = 35

    7m+35=21

    move + 35 to the other side

    sign changes from + 35 to - 35

    7m+35-35=21-35

    7m=21-35

    7m=-14

    divide both sides by 7 to get m by itself

    7m/7=-14/7

    cross out 7 and 7, divide by 7 and then becomes 1*1*m=m

    m=-14/7

    answer:

    m=-2
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