# How do you subtract #\frac { 7x } { 4} - \frac { 3x } { 5}#?

##### 2 Answers

Create a common denominator for both fractions so that they can be subtracted.

#### Explanation:

Create a common denominator by multiplying the first fraction by

Now that both terms have the same denominator the terms can be subtracted.

#### Explanation:

In order to add or subtract fractions, they must have the same denominator, called the least common denominator (LCD). To find the least common denominator, write the multiples for each denominator. The lowest (least) multiple in common is the LCD.

The LCD is

The first fraction needs to be multiplied by

Multiply.

Place the numerators over the denominator

Simplify.