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Elementary and Intermediate Algebra
Mark Dugopolski, Southeastern Louisiana University
Rational Expressions
Addition and Subtraction
Warm-Ups
1
1/2 + 1/3 = 2/5
A)
TRUE
B)
FALSE
2
7/12 - 1/12 = 1/2
A)
TRUE
B)
FALSE
3
3/5 + 4/3 = 29/15
A)
TRUE
B)
FALSE
4
4/5 - 5/7 = 3/35
A)
TRUE
B)
FALSE
5
5/20 + 3/4 = 1
A)
TRUE
B)
FALSE
6
2/x + 1 = 3/x for any nonzero value of x.
A)
TRUE
B)
FALSE
7
1 + 1/a = (a + 1)/a for any nonzero value of a.
A)
TRUE
B)
FALSE
8
a - 1/4 = (3/4)a for any value of a.
A)
TRUE
B)
FALSE
9
a/2 + b/3 = (3a + 2b)/6 for any values of a and b.
A)
TRUE
B)
FALSE
10
The LCD for the rational expressions 1/x and 3x/(x - 1) is x
2
- 1.
A)
TRUE
B)
FALSE
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