
Adding and Subtracting Rational Expressions Explained

Interactive Video
•
Mathematics
•
6th - 10th Grade
•
Medium
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Standards-aligned

Liam Anderson
Used 2+ times
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Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the expression 3x/5 + 2/5?
None of the above
It becomes 5x/10
It remains unchanged
It simplifies to 3x + 2/5
Tags
CCSS.HSA.APR.D.7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main idea behind adding and subtracting rational expressions?
You can only add expressions, not subtract them.
You need different denominators.
You need to factor the expressions first.
You need the same denominator.
Tags
CCSS.7.EE.A.1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When combining the numerators 13a and 5a, what is the result?
13a^2 + 5a^2
18a
18
8a
Tags
CCSS.HSA.APR.D.6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you simplify the fraction 18/4a^2?
9/2a
4.5/a^2
9a/2
Cannot be simplified
Tags
CCSS.HSA.APR.D.7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final step after combining like terms in subtraction of rational expressions?
Distribute the minus sign.
Combine the denominators.
Factor the numerator.
Reduce the fraction.
Tags
CCSS.HSA.APR.A.1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of subtracting 9x + 12 from 7x + 2?
2x + 10
16x + 14
-2x + 10
None of the above
Tags
CCSS.HSA.APR.D.7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important not to factor expressions right away in addition and subtraction problems?
Because it might lead to incorrect cancellation.
Because it's not necessary.
Because it complicates the problem.
Because you should combine numerators first.
Tags
CCSS.HSA.APR.A.1
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