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Mathematics 25 Online
OpenStudy (anonymous):

5x + 10y = 18 x = y - 6 Which of the following equations is the result of substituting y - 6 in for x in the first equation? a)5x + 10y - 6 = 18 b)5y - 6 + 10y = 18 c)5y - 30 + 10y = 18

OpenStudy (hihi67):

Well, it would be 5(y-6) +10y = 18

OpenStudy (hihi67):

And I guess you have to simplify.

OpenStudy (hihi67):

That would make 5y-30+10y=18

OpenStudy (hihi67):

So c)

OpenStudy (hihi67):

Did that help?

OpenStudy (anonymous):

yes thank you

OpenStudy (hihi67):

Could I have a medal then, if you don't mind? :)

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