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Mathematics 8 Online
OpenStudy (anonymous):

-6 over 7y - 6 >or equal to 42

OpenStudy (anonymous):

You need to solve for y?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

When solving for an unknown you need to get the unknown to one side of the equation. The unknown is y. So we have -6/7y-6 > equal to 42. First thing to do is add 6 to both sides 0f the =/>and what would the equation look like.

OpenStudy (anonymous):

-6/7y > equal to 48

OpenStudy (anonymous):

-6/7y > or = to 48/1. Now cross multiply and what do you get?

OpenStudy (anonymous):

would it be -6 < = to -336y?

OpenStudy (anonymous):

hold on i may have goofed

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

No that is correct. But it is -6 <= 336y Now divided -6 by 336.

OpenStudy (anonymous):

-56 correct?

OpenStudy (anonymous):

he reason it is -6 andis that if you cross multiplied -6/-7y that would actually be postive 6/7y...Negative /negative is a positive.

OpenStudy (anonymous):

Plug it in for y in the equation Does it work?

OpenStudy (anonymous):

kinda confused me on that last one so it is -6< = to 336y then divide by -6 it is -56?

OpenStudy (anonymous):

-6 =< 336y. We need to find the value for y so we divide both sides by 336 to get Y.

OpenStudy (anonymous):

okay

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