Math

If r = 5 z then 15 z = 3 y, then r =

1. y
2. 2 y
3. 5 y
4. 10 y
5. 15 y

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asked by Irene
  1. Multiply the first equation by 3
    3r=15z

    which means 3r=3y, which means r=....

  2. Now I get it. Haha, I've been trying to solve this for hours.

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    posted by Irene

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