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10 March, 01:45

How do you solve

10x + 7 = 2 (5x - 8) and

3 (3b + 1) = 2 (7b - 21) ?

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Answers (1)
  1. 10 March, 01:57
    0
    10x+7=2 (5x-8)

    10x+7=10x-16

    +16 + 16

    10x+23=10x

    -10x - 10x

    23=0

    3 (3b+1) = 2 (7b-21)

    9b+3=14b-42

    +42 + 42

    9b+45=14b

    -9b - 9b

    45=5b

    9=b
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