Do number 14 only Add or subtract write each sum or difference in simplest form

Step-by-step explanation:

We need to determine the least common denominator (LCD) of 10 and 14 in order to subtract both fractions.  A great way to do so is finding their least common multiply (LCM):

The prime factors of 10 are: 1, 2, and 5

The prime factors of 14 are: 1, 2, 7.

Therefore, the LCM of 10 and 14 are: 1 × 2 × 5 × 7 = 70

The LCD of 10 and 14 is 70.

Next, we need to rewrite the given unlike fractions into like fractions using the LCD.

×   =

×   =

Subtract both fractions:

-   =  

Reduce to its simplest form:

÷ =

Therefore, the correct answer is  .

518,400

step-by-step explanation:

the area is multiplying all the given measurements together.

40 * 18 * 30 * 24 = 518,400

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