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July 23, 2014

July 23, 2014

Posted by **CJ** on Saturday, October 27, 2012 at 1:58pm.

2)four times one number minus a second is 11, and the sum of the numbers is 14. Find the numbers.

- Math -
**Reiny**, Saturday, October 27, 2012 at 2:25pmlet one number (the first ) be x

let the second number by y

Just translate the English into Math , after all Math is just a language

"one number is four more than a second number" ---> x = y+4

"Twice the second is three more than the first" ---> 2y = x+3

so lining them up

x - y = 4

x - 2y = -3

subtract:

y = 7

then from x = y+7

x = 11

The first number is 11, the second is 7

check:

is 11 four more than 7 ? YES

is twice 14 three more than 11 ? YES

I am right!!!

Try the second the same way, show me your work

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