SUBTRACTION OF MIX-FRACTION -
2 1
Example.1) 7 ------- - 5 -------
5 5
Ans.) 2 1
7 -------- - 5 -------
5 5
STEP.1) Convert From Mix Fraction to Improper Fractions.
(7 X 5) + 2 (5 X 5) + 1
= ------------- - -------------
5 5
37 26
= ------- - -------
5 5
STEP.2) Subtract only the numerators, not the denominators. When we add or subtract fractions with same denominator, we just add or subtract the numerators and keep the denominator same.
(37 - 26)
= -----------
5
STEP.3) Reduce to lowest term if possible
11
= --------
5
STEP.4) Convert the improper fraction to mixed number as the denominator is smaller than the numerator.
πΉππππππ ππ
πΈπππππππ = ---------------
π«ππππππ
1
= 2 ------ (Ans.)
5
5 1
Example.2) 7 ------- - 2 ------- (Fraction with diferent Denominator)
6 5
Ans.)
5 1
7 ------- - 2 -------
6 5
STEP.1) Convert From Mix Fraction to Improper Fractions.
(7 X 6) + 5 (2 X 5) + 1
= ------------- - -------------
6 5
47 11
= ------- - -------
6 5
STEP.2) Now we will find LCM of two denominator of given fraction, where given denominators are not the same. so, the LCM of 5 & 6 is 30.
(47 X 5) - (6 X 11) (235 - 66)
= ------------------- = -------------
30 30
STEP.3) Reduce to lowest term if possible.
169
= --------
30
STEP.4) Convert the improper fraction to mixed number as the denominator is smaller than the numerator.
πΉππππππ ππ
πΈπππππππ = ---------------
π«ππππππ
19
= 5 ------ (Ans.)
30
1 3
Example.3) 2------- - ------- (Fraction with different Denominator)
12 4
Ans.)
1 3
2 ------- - -------
12 4
STEP.1) Convert From Mix Fraction to Improper Fractions, and another is proper fraction which is not need to be changed.
(2 X 12) + 1 3
= --------------- - -------
12 4
25 3
= ------- - ------
12 4
STEP.2) Find LCM of following denominators of obtained unlike fraction. LCM of two given denominator 12 & 4 is 12.
STEP.3) Change both the fractions to equivalent fractions with common denominators.
25 25 X 1 25
------- = ---------- = -------
12 12 X 1 12
3 3 X 3 9
and, ------ = ---------- = -------
4 4 X 3 12
STEP.4) Subtract the equivalent fraction.
25 9
-------- - -------
12 12
STEP.5) Subtract only the numerators, not the denominators.
(25 - 9) 16
= ------------ = -------
12 12
STEP.6) Reduce to lowest term if possible.
16 Γ· 4 4
= ----------- = -------
12 Γ· 4 3
STEP.7) Convert the improper fraction to mixed number as the denominator is smaller than the numerator.
πΉππππππ ππ
πΈπππππππ = ---------------
π«ππππππ
1
= 1 ------- (Ans.)
3