SOLUTION:
One number is 4 less than three times a number. If the product of these two numbers is 84, find the numbers.
Algebra.Com
Question 708712:
One number is 4 less than three times a number. If the product of these two numbers is 84, find the numbers.
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
X=3Y-4
XY=84
(3Y-4)Y=84
3Y^2-4Y-84=0
(3Y-14)(Y-6)=0
Y-6=0
Y=6 ANS.
X=3*6-4
X=18-4=14 ANS.
PROOF:
6*14=84
84=84
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