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25-(y+3)=10

 

my notebook says the answer is 12 ... but

 

25-(y+3)=10

28-y      = 10

-y          = 10-28

-y .         = -18

 

???

 Sep 29, 2017
edited by Guest  Sep 29, 2017
 #1
avatar+100587 
+1

25 - (y+3 )= 10     apply the negative over the terms in the parentheses

 

25 - y - 3   = 10      combine like terms  on the left side

 

22  - y   = 10          add y to both sides, subtract 10 from both sides

 

12  = y

 

 

 

cool cool cool

 Sep 29, 2017
edited by CPhill  Sep 29, 2017

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