### All GRE Math Resources

## Example Questions

### Example Question #1 : Expressions

Choose the answer which best simplifies the following expression:

**Possible Answers:**

**Correct answer:**

To simplify this expression, first multiply both terms by the denominator of the other over itself:

Now that you have a common denominator, you may subtract:

### Example Question #2 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the following expression:

**Possible Answers:**

**Correct answer:**

To simplify this problem, multiply each term by the denominator of the other over itself:

Now that both terms share a denominator, you can subtract:

### Example Question #1 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the following expression:

**Possible Answers:**

**Correct answer:**

To solve this problem, first multiply each term of the original expression by the denomenator of the other over itself:

Then you will have two terms with a common denomenator:

Combine the terms and simplify for your final answer:

### Example Question #4 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the expression below:

**Possible Answers:**

**Correct answer:**

To simplify this problem, multiply each term by the denomenator of the other over itself:

Then you will yield terms with a like denomenator, which can be combined:

### Example Question #5 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the expression below:

**Possible Answers:**

**Correct answer:**

To simplify the expression, first multiply each term by the denomenator of the other over itself:

Then you yield terms with common denomenators, which can be combined:

### Example Question #6 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the following expression:

**Possible Answers:**

**Correct answer:**

To simplify, first multiply each of the terms by the denomenator of the other over itself:

Then you will get terms with a common denomenator, which can be combined:

### Example Question #11 : Expressions

Choose the answer which best simplifies the expression below:

**Possible Answers:**

**Correct answer:**

To simplify, first multiply each of the terms by the denomenator of the other over itself:

You will yield terms with a common denomenator, which can be combined:

### Example Question #1 : How To Subtract Rational Expressions With Different Denominators

Choose the answer which best simplifies the expression below:

**Possible Answers:**

**Correct answer:**

To simplify, multiply each of the terms by the denomenator of the other, over itself:

You will yield terms with a common denomenator, which can be combined: