How do you subtract fractions?

When subtracting factions you need to have both denominators be the same

Let's use an example. . .

Step-by-step explanation:

1.

We can see here our denominators aren't the same. To get them to be equal, we have to multiply them by each other.

2.

Notice that when we do multiply, we also have to multiply the top! What's done to the bottom needs to be done to the top.

3. Let's go into the multiplication:

On the left side

Numerator: 3 · 3 = 9

Denominator: 3 · 4 = 12

On the right side

Numerator: 4 · 1 = 4

Denominator: 4 · 3 = 12

4.

Now all we do here is subtract the numerator. The denominator does not get subtracted, it stays the same.

5.

Tada!

The most important thing to remember is

answer is 144

step-by-step explanation:

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles