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PLEASE HELP WITH THIS ONE QUESTION

PLEASE HELP WITH THIS ONE QUESTION class=

Sagot :

Answer:

  (a)  7/x = 3x/21

Step-by-step explanation:

The proportion that shows the ratio of solution to water in each case is ...

  7/x = 3x/21 . . . . matches the first choice

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The other equations are wrong on their face. They all simplify to 3 = 1/3, which is false.