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Mathematics 10 Online
OpenStudy (anonymous):

What algebraic equation represents " three times the difference of a number,x, and nine equals fifteen"?

OpenStudy (usukidoll):

if it's just nine equals fifteen 9=15

hartnn (hartnn):

difference of a number,x, and nine--->x-9 three times the difference of a number,x, and nine---->3(x-9) equals fifteen --->=15

OpenStudy (usukidoll):

three times the difference of a number x ummm...wow it's been years since I tackled this

OpenStudy (usukidoll):

OH! Now I see it

OpenStudy (usukidoll):

we need to read this carefully since putting it in order isn't correct. difference of a number x is not -x it's x-

hartnn (hartnn):

so, what expression u got ?

OpenStudy (anonymous):

Thanks a lot

OpenStudy (usukidoll):

3(x-9)=15

hartnn (hartnn):

write the expression, so that we can verify

OpenStudy (usukidoll):

distribute 3x-27=15

OpenStudy (usukidoll):

oh crud too much info sorry

OpenStudy (anonymous):

3(x-9)=15

hartnn (hartnn):

thats correct.

OpenStudy (anonymous):

Yeah

OpenStudy (usukidoll):

x =14 XD

OpenStudy (usukidoll):

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