# add and subtract real number and fractions with different signs

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wzpuhtu2@paz.rqh

Mathematics

### Question Description

i need help adding and subtracting real numbers and fractions with different signs

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This is how you go about numbers with different signs.

Lets begin with what we know then we complete with the unknowns

When the sign is positive we don't indicate it

=5 +5

=10

Lets go to subtract

a postive 5 added to a negative 5

5 +( -5)

Let us look at it this way. You have \$5 you buy goods worthy \$5.  How much are you left with?

You are left with \$0

=5 +-5

=0

Lets say you had borrowed \$5 and then you Borrow \$5 more. How much is the total debt

=-5  +-5

=-10

Supposing you had borrowed \$5 and earned \$10. How much would you be having?

=-5 + (+10)

=+5

Supposing you had borrowed \$10 and earned \$5. How much would you be having?

=-10 + (+5)

=-5

Therefore we say you still have a deficit of \$5

Lets look at it in the number like which looks like this:

Study the image and let me know if there is further help you need

avpubynfXvz (1253)
Boston College
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Anonymous
Excellent resource! Really helped me get the gist of things.

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