# PSAT Math : How to subtract fractions

## Example Questions

### Example Question #1 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

.

Evaluate .

Explanation:

### Example Question #2 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

.

Evaluate .

Explanation:

### Example Question #3 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

Evaluate .

Explanation:

### Example Question #4 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

.

Evaluate .

Explanation:

### Example Question #5 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

Evaluate

Explanation:

### Example Question #6 : How To Subtract Fractions

Define an operation  as follows:

For all real ,

.

Evaluate .

The correct answer is not among the other responses.

The correct answer is not among the other responses.

Explanation:

This answer is not among the choices given.

### Example Question #7 : How To Subtract Fractions

Subtract and simplify the fractions: