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Can someone help me with this math problem?

Asked by funadvice over 2 years ago, 12 answers.

-3b+9=9-3b

I dont have any notes on these. Could someone let me know what you get and how you got your answer? Thank you for your help by the way.

Question closed

Answered by aznm0nk3y on Oct 18, 2007, 05:18PM
121 answers

b=2

1 person thought this was helpful

Answered by aznm0nk3y on Oct 18, 2007, 05:20PM
121 answers

-3(2)=-6
-6+9=9-6
3=3

i always did things differently than other people so i may not be the best person for doing it the right way, but the answer should be correct

1 person thought this was helpful

Answered by funadvice on Oct 18, 2007, 05:20PM
53975 answers

Okay. Um could you show mw how you did that please? Thanks btw.

Answered by funadvice on Oct 18, 2007, 05:21PM
53975 answers

Oh okay. Thank you. I just want to know how to do these because we might have a test next week, and also I have a whole worksheet of them to do tonight. Yay. Lol, but thanks!

happy

Answered by aznm0nk3y on Oct 18, 2007, 05:24PM
121 answers

Answered by x0yercute on Oct 18, 2007, 05:26PM
20 answers

ok well. -3b+9=9-3b. what you need to do is find out what b equals. so, you undo each side so you can get the variable (b) on one side. sounds hard, but it's simple when you think of unplugging. ***WHATEVER YOU DO, MAKE SURE YOU DO IT TO THE OTHER SIDE. IF YOU DO SOMETHING ON THE LEFT SIDE OF THE EQUAL SIGN, DO IT ON THE RIGHT SIDE OF THE EQUAL SIGN.

-3b+9=9-3b
-9 -9
___
-3b=-3b
___ ___
-3 -3
b=b
so b is any number.

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Answered by aznm0nk3y on Oct 18, 2007, 05:29PM
121 answers

Yes thats the proper way to do it, I remember now. ^.^ cheers x0yercute

been years since I did a math problem like this.

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Answered by funadvice on Oct 18, 2007, 05:33PM
53975 answers

so the answer is b is anything? Also, what are the lines for? Dividing? Lol, sorry Im not good at math.

Answered by x0yercute on Oct 18, 2007, 05:42PM
20 answers

yahh sorry it got messed up somehow when i posted it. likee you can do a check for it. someone said 2. whch would be right. you can plug it in. but you can also plug in another number, like 4.
(-3 x 4)+9=9-(-3 x 4)
12+9=9--12---when you see -- (subtracting a negative number) -- means ADD. an easy way to remember this is if you take one of the minus signs andput it on top of the other minus sign it forms a plus sign. anyways, back to business.
so,
12+9=9+12
21=21
trust me any number works. i am the top female math student of my school and won awardss.

Answered by funadvice on Oct 18, 2007, 05:44PM
53975 answers

Wow you explain it better on the computer than my teacher does to my face. Lol.
Thanks guys. happy

Answered by x0yercute on Oct 18, 2007, 05:46PM
20 answers

yuupp(; no problem!
im a math geek but not like a geek geek.
100% girly girl who likes math?hahaa. thats me.

Answered by broadwaystar101 on Oct 19, 2007, 09:50AM
519 answers

-3b+9=9-3b
Because you have 'b' on both sides of the equation, you need to do something to both sides of the equation.
-3b+9=9-3b so because you have a positive 9 on both sides, subtract 9 from each side
-9 -9
-3b=-3b - by adding the opposite of +9 to both sides, i figured out that b is equal to b, thus b could be any number