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19 December, 03:53

5. Solve each equation.

a. - 1/8d - 4 = - 3/8

+3
Answers (2)
  1. 19 December, 04:24
    0
    -1/8d - 4 = - 3/8

    move - 4 to the other side

    sign changes from - 4 to + 4

    -1/8d-4+4=-3/8+4

    -1/8d=-3/8+4

    pretend that 4 has a denominator which is 1

    -1/8d=-3/8+4/1

    find the common denominator for 4/1 which is 8

    multiply by 8 for 4/1

    4 (8) / 1 (8) = 32/8

    -1/8d=-3/8+32/8

    -1/8d=29/8

    multiply both sides by - 8/1 to get + d

    -1/8d*-8/1=29/8 (-8/1)

    Cross out 8 and - 8, divide by 8 and then becomes 29*1*-1=-29

    Cross out - 1/8 and - 8/1, divide by 8 and 1. Then becomes 1*1*d=d

    Answer:

    d=-29
  2. 19 December, 05:49
    0
    -1/8d-4 = - 3/8

    +4 + 4

    -1/8d=29/8

    d = - 29
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