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avatar+1638 

Help.

NotSoSmart  Sep 19, 2017
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 #1
avatar+82634 
+2

 

( [2x] / 5  - 9 )   + 9       note that we could write 

 

[ 2x ]/ 5  +   ( -9  + 9)  =

 

[2x ] / 5   +  0  =

 

[2x] / 5

 

 

 

 

Perimeter  =  2  [  Width + Height  ]  = 

 

2 [ (3y - 5)  + ( 2y) ]  =

 

2  [  3y + 2y  - 5 ] =

 

2 [ 5y  - 5 ]  =

 

10y  - 10

 

 

 

cool cool cool

CPhill  Sep 19, 2017

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