plz substitute the following equations
5x + 2y = 13 …. 1)
4x – 3y = 15 …. 2)​

2 thoughts on “plz substitute the following equations<br />5x + 2y = 13 …. 1)<br />4x – 3y = 15 …. 2)​”

1. x= (13-2y)/5

   Or

   x= (15+3y)/4

   Or

   y= (13-5x)/2

   Or

   -y= (15-4x)/3

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2. step1-___

   5x+2y-13=0

   4x-3y-15=0

   step2__

   take ‘y’ coffecient and constant ,then x coffecient put them side by side and same y coffecient

   step3____

   x y 1

   2 -13 5 2

   -3 -15 4 -3

   step4___

   do cross multiply

   X/-30-39 ,Y/-52+75 , 1/-15-8

   X/-69, Y/23, 1/-23

   step 5____

   therefore,X= -69/-23

   Y=23/-23

   》》(x,y)=(3,-1)

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