Review of Introductory Mathematics
FRACTIONS
This graphic illustration can be done for any addition of fractions with common denominators.
The sum of the fractions is obtained by adding the numerators and dividing this sum by the
common denominator.
2
6
3
6
1
6
2×
1
6
3×
1
6
1×
1
6
6×1
6
1
Also, this general method applies to subtraction, for example,
The general method of subtraction of fractions with common denominators is to subtract the
numerators and place this difference over the common denominator.
5
8
2
8
5×
1
8
2×
1
8
(5 2)×
1
8
3×
1
8
3
8
Rev. 0
Page 27
MA-01
