Question #1
(-7) - (-74) = (-7) + (+74)
Standard Form: -7 +74= 
Negative 7 remove negative 74 
Negative 7 and positive 74
                   
                      
                        Have   Owe
Question #2 (+90) - (-24) = (+90) + (+24) 
Standard form: 90 + 24 
Positive 90 remove negative 24
Positive 90 and positive 24 
                   
                                                                                                                                                                              
                   
                   Have    Owe
Question #3 (+23) - (-38) = (+23) + (+38) 
Standard form 23 + 38= 
Positive 23 remove negative 38 
Positive 23 and positive 38 
Here is a video that can help you Subtract integers. 
Wednesday, December 5, 2012
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Good job andrew i like how you showed it really big on the number line on the one that is subtracting if you put a line where one ends on the zero you should put a line there to show the zero pairs and i like the video you put
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