SOLUTION: the sum of 2 numbers is 90 , 1 number is 10 less then 3 times the other number. What are 2 number ?
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Question 980355: the sum of 2 numbers is 90 , 1 number is 10 less then 3 times the other number. What are 2 number ?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x+y=90
x=3y-10
Substitute
3y-10+y=90
4y-10=90
4y=100
y=25
x=65, and that is 10 less than 75, which is 3 times x
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