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In $3-20$ , perform the indicated additions or subtractions and write the result in simplest form. In each case, list any values of the variables for which the fractions are not defined.$$\frac{a+5}{5 a}-\frac{a-8}{8 a}$$

$\frac{3 a+80}{40 a}, a=0$

Algebra

Chapter 2

THE RATIONAL NUMBERS

Section 4

Adding and Subtracting Rational Expressions

Fractions and Mixed Numbers

Decimals

Equations and Inequalities

Oregon State University

McMaster University

Harvey Mudd College

Lectures

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In mathematics, the absolu…

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In $3-20$ , perform the in…

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bringing its simplify the following expression. This is question, eh? Our expression is a plus five all over five A subtracting a minus eight allover. Hey, In order to start this, we need to have the same denominator. So we're going to multiply the first fraction my eight, and then we're going to multiply the 2nd 1 by five. Remember what you do to the top. You have to do the bottom that's gonna turn out to be a plus. 40 all over. Were you a? And the next one is gonna be five a minus 40. Well, over 40 eh? So we're gonna have a plus 40 minus five a minus, a negative 40. Which is Seamus adding 40 all over. Fourty, eh? Now we're gonna combine the like terms, so we're gonna have three a 80 all over 40 eh? And that's our answer. We can't take that any farther. But he also said to identify what, um, would make this undefined to make it undefined. A cannot equal to zero

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