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September 19, 2014

September 19, 2014

Posted by **May** on Monday, March 25, 2013 at 6:49pm.

- aig math -
**K**, Monday, March 25, 2013 at 7:46pmPat= x , Kyle= y, Ryan= z

x+y+z= 306

2x= y+z

z+18=y

So from here, you just plug the equations into each other...

2x= y+z

so, 2x= (z+18)+z

so, 2x= 2z+18

so, x= (2z+18) /2

Then you plug this in to the equation: x+y+z= 306

So... (2z+18) /2 + (z+18) + z = 306

Then, 4z+38 = 612

4z = 576

z or Ryan= 144 stamps

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