help with simplifying expressions (practice test)

G

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1) 5y + 7(x - 5) - 3(y - 5) =

And if you're feeling really nice, I have a lot more:

2) (x + 9)/(x^2 - 9) - 2/(x - 3)
 
1) Multiply the 7 and the 3 through their respective parentheses, and combine "like" terms. For instance, 7(x - 5) = 7x - 35, and 5y - 3y = 2y.

2) Convert the second fraction to the common denominator of x<sup>2</sup> - 9, and then subtract the numerators.

How far have you gotten? Where are you lost?

Please be specific. Thank you.

Eliz.
 
azlynn2 said:
I am completely lost...I need help on the entire thing!!!
Click to expand...

Well try what stapel said and see what happens:

1) Multiply the 7 and the 3 through their respective parentheses, and combine "like" terms. For instance, 7(x - 5) = 7x - 35, and 5y - 3y = 2y.

2) Convert the second fraction to the common denominator of x2
Click to expand...
 
Since we cannot teach lessons within this environment, please consider the following online resources instead:

. . . . .FreeMathHelp: Combining Like Terms

. . . . .Simplifying with Parentheses

. . . . .Factoring Quadratics

. . . . .Special Factoring

. . . . .FreeMathHelp: Adding and Subtracting Rational Functions

. . . . .LCM and GCF

. . . . .Adding and Subtracting Rational Expressions

Once you have learned the basic terminology and techniques for these topics, please attempt these exercises, following the advice provided earlier. If you get stuck, please reply showing all of your steps.

Thank you.

Eliz.
 
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