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21 July, 17:19

Substitute

X=3y

X-3y=0

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Answers (2)
  1. 21 July, 17:29
    0
    Answer:3y-3y=0

    Step-by-step explanation: They are giving you a value for X that is 3y. You put that value in place of x. So, if x=12 and they want you to substitute for x-3y=0, you would have 12-3y=0 ... but the value of x in your question is 3y ... so you replace the x in the equation with it's value ... which is given to you as 3y ... or in my example, 12.
  2. 21 July, 18:12
    0
    Step-by-step explanation:

    x=3y

    put

    x=3y

    3y-3y=0

    0=0
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