SOLUTION: solve by the method of your choice. -x + y =1 2x - 3y = -7

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Question 395633: solve by the method of your choice.
-x + y =1
2x - 3y = -7
Found 2 solutions by ewatrrr, mananth:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


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) About Me  (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
...