Posted by Ricky on Wednesday, January 23, 2008 at 12:32am.
yea it sais, three times one number added to another number is 18. twice the first number minus the other number is twelve.
find the numbers

math  Quidditch, Wednesday, January 23, 2008 at 12:51am
x=first number
y=second number
3*x + y = 18
2*x  y = 12
You need to eliminate one of the variables and solve for the remaining one. In this problem, you can see that if the two equations are added together, the y variable is eliminated:
adding:
3x + y = 18
2x  y = 12

5x + 0y = 30
5x = 30
x=6
plug the known x value into either equation to solve for y.
taking the first one...
3*6 + y = 18
rearrange to get
y = 0

math  Ricky, Wednesday, January 23, 2008 at 12:58am
hey thx man, i messed up that one cause i though added to another number ment it goes before it
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