AddingSubtracting RE with Like Denominators(1) - Alma Par.ppt

Addition/Subtraction
Addition/Subtraction
of Rational Expression
of Rational Expression
with Like Denominators
with Like Denominators

The learner performs operations on
rational algebraic expressions.
(M8AL-Ic-d-1)
A. Recall addition and subtraction of
fraction with like denominators.
B. Add/Subtract Rational Expression with
like denominators.

14
4
14
3

14
7

2
1
Review : Find each sum or difference
2
1

10
5
10
9

10
4

5
2

2
5

3
2
9
3
2
6


 x
x
x
3

3
2
9
6



x
x
Find each sum or difference. Write in
simplest form
3
2
)
3
2
(
3



x
x
Combine the
numerators
Factor using
CMF
Cancel common
factor

2
16
2
9 2
2



 y
y
y
y
y
2
)
16
(
9 2
2




y
y
y
y
Find each sum or difference. Write in
simplest form
Apply the distributive
property
Simplify by
combining
like terms
2
16
9 2
2




y
y
y
y
2
16
8 2



y
y
y

y
8

Factor using
CMF
2
16
8 2



y
y
y
2
)
2
(
8



y
y
y
Cancel common
factor

ACTIVITY
ACTIVITY 

Find the sum or difference.
1
2
7
2
1
2
3
6
.)
1





m
m
m
m
1
3
1
1
3
9
.)
2
2


 y
y
y

Answers
Answers 

.)
1
.)
2
4
1
3 
y

AddingSubtracting RE with Like Denominators(1) - Alma Par.ppt

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