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Mathematics 9 Online
willijs:

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 in both expressions. Explain why this will not work.

zunairah:

multiply 2.7 by X .

zunairah:

anything before x you have to multiply it by x

zunairah:

in this case we know x = 0

zunairah:

so do 2.7(0) - 5.9

zunairah:

and then 2.8(0)-5.9

zunairah:

then see if they both equal the same thing

zunairah:

welcome to question cove btw :)

willijs:

thank you so much!!!!

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