SOLUTION: I really need help solving this problem using Cramer's rule {x-y=2 y-x+4=0 I don't understand how to do it when there

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 Question 595862: I really need help solving this problem using Cramer's rule {x-y=2 y-x+4=0 I don't understand how to do it when there's an extra number involved (like the 4 in this case) Answer by jsmallt9(3296)   (Show Source): You can put this solution on YOUR website!Just use algebra to get the second equation into the form you need for Cramer's rule. Subtracting 4 from each side we get: y - x = -4 You also want the x in front. So change it to addition (so you can change the order of the terms): y + (-x) = -4 Now put the x in front: (-x) + y = -4 Now your system is: x - y = 2 -x + y = -4 You should be able to use Cramer's rule now.