Question

How do you evaluate `\frac { 3} { 5}- \frac { 1} { 4}`?

Answer 1

`7/20`

Explanation:

For the addition and subtraction of fractions, there must be a common denominator

the common denominator for these fractions is 20

Multiply the fractions (numerator and denominator) to achive a common denominator

So,

= `(3*4)/(5*4)-(1*5)/(4*5)`

= `12/20 - 5/20`

Subtract the numerators,

= `7/20`