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Please explain how to do this.

 

Select all the expressions that are equivalent to -2/5 (15 - 20d + 5c).

 

 Apr 16, 2020
 #1
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Use distruibutive property to expand

 

-2/5 (15)    +  -2/5(-20d)    +  -2/5 (5c)     and simplify

-6               +   8d               -   2c         re-arange to get 

-2c             +8d                  -6                and  factor out  - 2 to get

-2 (3          - 4d                  + c)            

 Apr 16, 2020

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