Add and Subtract Fractions with Different Denominators
Completion requirements
Read this text for more examples and guidance. It gives a good review of how to find common denominators. Pay attention to the "How To" section at the beginning for an overview of the process. Do Examples 4.67 – 4.72 and check your answers.
Exercises
EXAMPLE 4.67
Add: 
.
EXAMPLE 4.68
Subtract: 
.
EXAMPLE 4.69
Add: 
EXAMPLE 4.70
Subtract: 
.
EXAMPLE 4.71
Add:
.EXAMPLE 4.72
Add: 
.