Question

Ryan is trying to determine whether 2.7x – 5.9 is equivalent to 2.8x – 5.9. To test this, he substitutes 0 for x into both expressions. Explain why this will not give him the correct answer.

Answer 1

Answer:

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Step-by-step explanation:

This won't give him the correct answer because if he substitutes zero into anything he will get -5.9. 0 multiplied by anything is 0 and if you put that into bot equations you get the same answer so it won't help him. he should instead try 1 or something like that.

Answer 2

Answer: This will not give him the correct answer because if he substitutes zero into x he will get 0 -5.9. 0 multiplied by anything is 0. If you were to put this into both equations you end up with the same answer no matter what. This will not help him because he needs to find out if they are equivalent and 0 makes any equation equivalent. Instead, he should try substituting compatible numbers such as 1 or 2.

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