SOLUTION:
PLEASE HELP ME. I don't understand this question
Algebra.Com
Question 95095:
PLEASE HELP ME. I don't understand this question
Answer by ionesco(12) (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