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angelvwhat is 2/5 - 6/7? 

dont tell me the answer 

tell me how to get it

i want to do it myself

 Oct 29, 2015

Best Answer 

 #2
avatar
+10

Simplify the following:
2/5-6/7

Put 2/5-6/7 over the common denominator 35. 2/5-6/7  =  (7×2)/35+(5 (-6))/35:
(7×2)/35+(5 (-6))/35

7×2  =  14:
14/35+(5 (-6))/35

5 (-6)  =  -30:
14/35+-30/35

14/35-(30)/35  =  (14-30)/35:
(14-30)/35

14-30  =  -(30-14):
-(30-14)/35

| 2 | 10
| 3 | 0
- | 1 | 4
| 1 | 6:
Answer: | 
| (-16)/35

 Oct 29, 2015
 #2
avatar
+10
Best Answer

Simplify the following:
2/5-6/7

Put 2/5-6/7 over the common denominator 35. 2/5-6/7  =  (7×2)/35+(5 (-6))/35:
(7×2)/35+(5 (-6))/35

7×2  =  14:
14/35+(5 (-6))/35

5 (-6)  =  -30:
14/35+-30/35

14/35-(30)/35  =  (14-30)/35:
(14-30)/35

14-30  =  -(30-14):
-(30-14)/35

| 2 | 10
| 3 | 0
- | 1 | 4
| 1 | 6:
Answer: | 
| (-16)/35

Guest Oct 29, 2015

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