The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a system to determine the correct numbers)

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asked May 20, 2018 209k views

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DarrenRhodes · Answer 1 · 2018-05-23T20:23:43+0000

(x+y) / 2 =7
multiply both sides by 2
x+y=14

3x=.5y
divide both sides by .5
6x=y

plug 6x in for y

x+(6x)=14
simplify
7x=14
divide both sides by 7
x=2

The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number. (Hint: write a system to determine the correct numbers)

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