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What is 45 - 50 - (-12)?

What is 45 - 50 - (-12)?Please show your work

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Vivian L. | Microsoft Word/Excel/Outlook, essay composition, math; I LOVE TO TEACHMicrosoft Word/Excel/Outlook, essay comp...
3.0 3.0 (1 lesson ratings) (1)
1
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Hi Again Chris;
45 - 50 - (-12)
 
The double negative, is a positive.
This is...
45-50+12
-5+12
7
Alex V. | College doesn't make you smart. College teaches you to be resourceful.College doesn't make you smart. College ...
4.8 4.8 (73 lesson ratings) (73)
1
45 - 50 - (-12) 
 
-(-) is the same as -1*(-1). So multiply first.
 
= 45 - 50 + 12
 
 
To avoid confusion in the Order of operation:
 
45 - 50 + 12
 
= 45 + (-50) + 12
 
= 7