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24 April, 06:00

A + b + c = 180

b = 3a

c = 5a

Whats B

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Answers (2)
  1. 24 April, 07:07
    0
    Sub

    b=3a so put 3a for every b

    c=5a so put 5a for every c

    a+3a+5a=180

    9a=180

    divide 9 both sides

    a=20

    b=3a

    b=3 (20)

    b=60
  2. 24 April, 09:14
    0
    Plug 3a for b and 5a for c

    a + 3a + 5a = 180

    9a = 180

    a = 20

    b = 3 x a = 3 x 20

    b = 60
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