SOLUTION: PLEASE HELP ME. I don't understand this question

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Question 95095:
PLEASE HELP ME. I don't understand this question


Answer by ionesco(12) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply everything with 3: 7x+5y=23 21x+15y=69
Multiply everything with 7: 3x-y=4 21x-7y=28
substract one from another: 22y=41 then y=41/22
x=(4+y)/3