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what is -2/7+3/5?

 Nov 3, 2015
 #1
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+5

Simplify the following:
(-2)/7+3/5

Put (-2)/7+3/5 over the common denominator 35. (-2)/7+3/5  =  (5 (-2))/35+(7×3)/35:
(5 (-2))/35+(7×3)/35

5 (-2)  =  -10:
-10/35+(7×3)/35

7×3  =  21:
(-10)/35+21/35

(-10)/35+21/35  =  (-10+21)/35:
(-10+21)/35

-10+21 = 11:
Answer: | 
| 11/35

 Nov 3, 2015
 #2
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0

−4.2=-19.3?

 Feb 21, 2017

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