Answers

2014-10-13T01:29:06+08:00
X+3y = - 5    &    2x+ y = 5
2x+y = 5
x = (5-y)/2 
(5-y)/2 + 3y = -5
2[(5-y)/2 + 3y] =   2 . -5      / multiply both sides of the equation                                                by 2                     
   5-y + 6y = -10
   5y=-15
      y = -3
2x-3 = 5        substitute y in the  second equation
x = 4
the answer is  x= 4  &  y = -3

















































  
 
  

 

    
  

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