Demonstrate the addition-5-(-2) in 2 different ways.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
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6. Demonstrate the addition -5 - (-2) in 2 different ways.
a. 1st way
b. 2nd way
Transcribed Image Text:6. Demonstrate the addition -5 - (-2) in 2 different ways. a. 1st way b. 2nd way
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Step 1

1st  way -           - 5 - (-2) =- 5 -1 (-2)                                 = - 5 + 1 (-1)·(-2),  here we use property that -1 = 1× (-1)                                 = - 5 + (-1)·(-2)                                  = - 5 + 2, here we use (-a)×(-b) = ab                                 = -3                                                                       

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