Hi

Solving by substitution

-x + y =1  OR y = x+1

2x - 3y = -7

2x - 3(x+1) = -7

  -x -3 = -7

     x = 4 and y = 5   (4+1)



 

Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
 -x + y =1............................1

2x - 3y = -7..........................2

...

multiply (1) by 2

-2x+2y=2

2x-3y=-7

add

-y=-5

y=5

...

-x+y =1

y =5

so x=4

...

 

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