# How to Add and Subtract Negatives?

Once you've mastered adding and subtracting integers, the next logical step is learning to perform the same operations on negative numbers. There's only 1 right answer for each combination of negat...
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http://www.wikihow.com/Add-and-Subtract-Negatives

## Does anyone know of a scanner that is capable of scanning in 126 negatives or older negatives of unknown film?

Get the newer HP scanners which will scan transparencies, films and negatives.

http://answers.yahoo.com//question/index?qid=20120517103753AAveYNd

## How to Subtract?

Subtraction is a simple mathematical operation that determines the difference between two numbers. Subtract smaller numbers mentally or use a pen and paper or electronic device for more complicated...
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http://www.ehow.com/how_8268249_subtract.html

## How to Subtract & Borrow?

Subtracting is a task that is useful in many situations, such as balancing your checkbook, making change or calculating a date. Subtraction is taught as early as elementary school and continues thr...
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http://www.ehow.com/how_8240220_subtract-borrow.html

## How to Add and Subtract Functions?

Just as you can add and subtract numbers or polynomial expressions, you can add or subtract functions. Performing simple operations on functions is no more complicated than performing those operati...
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http://www.wikihow.com/Add-and-Subtract-Functions