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asked • 12/08/16

The sum of two numbers is 18 and their difference is 6 what is the answer?

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Izz Y.

12 and 6
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10/16/18

Gaby C.

thank you
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02/10/19

Ali F.

Thank you that helps
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03/25/19

Jaedon D.

thank you izz Y.
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11/03/20

2 Answers By Expert Tutors

By:

Arthur D. answered • 12/08/16

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Mathematics Tutor With a Master's Degree In Mathematics
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x and 18-x are the numbers
x-(18-x)=6
x-18+x=6
2x-18=6
2x=18+6
2x=24
x=12
18-x=6
12 and 6 are the numbers
or,...
x+y=18
x-y=6
add
2x=24
x=12
y=18-12=6
or, because the numbers are so small...
18/2=9
9 and 9 no
10 and 8 no
11 and 7 no
12 and 6 yes
Upvote • 7 Downvote
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Zachuary P.

thanks
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01/04/21

danny D.

12 and 6
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02/12/21

Zariah W.

when I did it, it said it was wrong
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05/17/21

Diana P.

If you know the game prodigy we go through these problems a lot so I am still not used to doing this type of math, but this really helped me understand it better
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10/02/21

Magnificent P.

this is not help me
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10/07/21

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