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2x+2y=36

y+1=x+3

 Sep 14, 2016
 #1
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2x+2y=36

    y+1=x+3     |-1

        y=x+2

 

2x+2(x+2)=36

   2x+2x+4=36    |-4

             4x=32   |:4

               x=8

 

      2*8+2y=36

       16+2y=36    |-16

             2y=20    |:2

               y=10

laugh

 Sep 14, 2016

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