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avatar+177 

Erin and Evan had an equal number of baseball cards. After Erin gave away 37 baseball cards and Evan gave away 57 baseball cards, Erin had 2 times as many baseball cards as Evan. How many baseball cards did each have at first?

 Jul 16, 2021
 #1
avatar+121008 
+1

Since  both  started  with  the same  number, let  this  =  E

 

So

 

(E  - 37)  = 2 ( E - 57)      simplify

 

E - 37  =  2E  - 114

 

114 - 37   =   2E  - E

 

77  =  E

 

Each started with  77

 

 

cool cool cool

 Jul 16, 2021

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