Substracting fractions
a, c, e = numerator
b, d, f = denominator
-- = fraction line
WHAT IS IT ?
Fraction is numerical quantity that is not a whole number.
• the top number (the numerator) says how many parts we have.
• the bottom number (the denominator) says how many parts the whole is divided into
• the top number (the numerator) says how many parts we have.
• the bottom number (the denominator) says how many parts the whole is divided into
CALCULATION:
EXAMPLE:
numeratorA is 1
denominatorA is 2
numeratorB is 2
denominatorB is 5
| 1 | 2 | 1 | ||
| ---- | - | ---- | = | ----- |
| 2 | 5 | 10 |
When subtracting fractions, we first need to find the least common denominator of denominators A and B, which in our case is 10 (10 is divisible by both 2 and 5).
numeratorA is then multiplied by the number of times denominatorA (2) fits into the common denominator (10).
10/2 = 5
numeratorA is then 1 * 5 = 5
We do the same for numeratorB
10/5 = 2
numeratorB is then
2 * 2 = 4
The common numerator is then 5 - 4 = 1
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