Answers: 1
---------> equation 
---------> equation 
----------> equation 
![800*[22.432 -0.012y]+4y=9344](/tpl/images/0075/1680/fc020.png)
![800*[22.432 -0.012y]+4y=9,344\\17,945.6- 9.6y+4y=9,344\\9.6y-4y= 17,945.6-9,344\\ 5.6y=8,601.6\\y=8,601.6/5.6\\y= 1,536](/tpl/images/0075/1680/10bd2.png)
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500x+6y=11216. and 800x+4y=9344 solve substuition method...
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