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19 February, 00:02

3a + b = 225

b = a - 15

+1
Answers (2)
  1. 19 February, 02:05
    0
    A = 60

    b = 45

    (: i took the quiz
  2. 19 February, 03:13
    0
    3a + b = 225

    b = a - 15

    3a + b = 225

    a - b = 15

    4a = 240

    a = 60

    3 (60) + b = 225

    180 + b = 225

    b = 45

    So, a = 60 and b = 45
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