aidenkenline aidenkenline
  • 20-01-2020
  • Mathematics
contestada

(2x/3)-(2x/5)=-60 and .2x+.9y=19.2

Respuesta :

joshnajd joshnajd
  • 25-01-2020

Value of x=-225

Value of y=71.33

Explanation :

2x/3-2x/5=-60 (1)      

0.2x+0.9y=19.2    (2)    

(2x*5-2x*3)/(3*5)=-60  

   (10x-6x)/15=-60  

 4x/15=-60  

4x=15*-60

4x=-900

x=-900/4=-225    

consider (2)  

0.2x+0.9y=19.2    

substitute the value of x in (2)  

0.2*-225+0.9y=19.2  

0.9y=19.2+45=64.2

y=(64.2)/(0.9)=71.33

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