SOLUTION: can someone please help me solve the following problems Solve the following: 1. 2/7 - 1/3 = ? 2. 4/5 x 15/2 = ? 3. 2 1/2 � 3/4 = ?

Question 175472: can someone please help me solve the following problems

Solve the following:
1. 2/7 - 1/3 = ?
2. 4/5 x 15/2 = ?
3. 2 1/2 � 3/4 = ?

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: Fractions Solver

Start with the given expression

In order to subtract these two fractions, these fractions need to have a common denominator.

In order to do that, we simply find that the LCM of 7 and 3 is 21 (note: if you need help with finding the LCM, check out this solver)

Now we need to get each denominator to 21

Multiply by

Multiply and to get

Multiply by

Multiply and to get

Since both fractions have a common denominator of 21, we can now combine the fractions

Combine the fractions

Subtract the numerators

So

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Solved by pluggable solver: Fractions Solver

Start with the given expression

In order to multiply these fractions, simply multiply the numerators and denominators separately like this:

Multiply the numerators 4 and 5. Place them as the numerator. Multiply the denominators 15 and 2. Place them as the denominator

Now multiply

So

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Note: . So this means that 5/2 � 3/4 is identical to 2 1/2 � 3/4

Solved by pluggable solver: Fractions Solver

Start with the given expression

In order to divide these fractions, first we need to flip the second fraction to get .

Now multiply the first fraction by the second fraction

Now simply multiply the numerators and denominators separately like this:

Multiply the numerators 5 and 4. Place them as the numerator. Multiply the denominators 3 and 2. Place them as the denominator

Now multiply

So

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