Question

Simplify each rational expression. If the rational expression cannot be simplified, so state. $\frac{7 x+21}{49}$ 

   Simplify each rational expression. If the rational expression cannot be simplified, so state.
$\frac{7 x+21}{49}$
Introductory & Intermediate Algebra for College Students
Introductory & Intermediate Algebra for College Students
Robert F. Blitzer 4th Edition
Chapter 7, Problem 24 ↓
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Simplify each rational expression. If the rational expression cannot be simplified, so state. $\frac{7 x+21}{49}$
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Transcript

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00:01 This problem might appear that nothing can be canceled out.
00:04 However, we were going to have to do a little bit of work to figure it out.
00:07 Now, i can't cancel out the 7 with the 21 because in order to do some canceling, we have to think of it as canceling entire factors.
00:15 7 is considered a term and x is considered a term of the expression x minus 7.
00:20 So what we're looking for is can the denominator have an x minus 7 to cancel out with? well, in order to do some work here, we're looking to factor it...
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