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September 30, 2014

September 30, 2014

Posted by **William** on Thursday, November 6, 2008 at 8:30pm.

3 + 2(k+1) = 6 + 3k

I know the 2(k+1) has to become 2k + 2

then we have 3 + 2k + 2 = 6 + 3k

then we can subtract 3k from both sides to get

3 +2k + 2 - 3K = 6

But can I combine the 3+2 on the left

and the 2k - 3k to get -1k?

leaving us with 5 -1k = 6

-1k = 6-5

-1k = 1

k = -1

- 7th grade pre algebra -
**Ms. Sue**, Thursday, November 6, 2008 at 8:32pmGreat! You are correct!

- 7th grade pre algebra -
**William**, Thursday, November 6, 2008 at 8:35pmThank you! I had figured it out four ways the wrong way. Don't know what I'm doing wrong. Think it may have to do with the MiDAS rule or something but cannot figure it out.

- 7th grade pre algebra -
**William**, Thursday, November 6, 2008 at 8:39pm5/6t + 4 = 2 - 1/6t

Is the best thing to do first in this case to get rid of the fractions? Should I turn them into decimals or multiply both sides by 6? And when I multiply by 6, do I multiply each factor by 6. SO it becomes

5t + 4(6) = 2(6) -t

?

Thanks.

- 7th grade pre algebra -
**Catie**, Wednesday, November 19, 2008 at 4:56pmz/6 + 11 > -49

This is my problem for homework and I don't know how to do it. My teacher showed us but I guess it didn't get throw to me. ?????????????? Help

- 7th grade pre algebra -

- 7th grade pre algebra -
- 7th grade pre algebra -
**Writeacher**, Thursday, November 6, 2008 at 8:39pmPEMDAS is the order of operations!

(Please excuse my dear Aunt Sally = PEMDAS mnemonic = easier to remember)

Parentheses

Exponents

Multiply

Divide

Add

Subtract

http://www.mathgoodies.com/lessons/vol7/order_operations.html

- 7th grade pre algebra -
**Sibu**, Tuesday, November 18, 2008 at 7:22pmhow do i solve the problem3(z-2)+6=5(z+4)

- 7th grade pre algebra -
**alyssa**, Tuesday, December 2, 2008 at 9:13pmwhat is the answer to.. round the difference of two hundred and seven-tenths and one hundred twenty-nine and nine tenths to the nearest whole number?

- 7th grade pre algebra -
**guygtutyv**, Wednesday, May 6, 2009 at 8:22pmthe key is to try its very clear. Just use your distributive property when its ilke 3(3*4) . Your just nervous because it looks like a big problem

- 7th grade pre algebra -
**Brittany**, Tuesday, January 12, 2010 at 5:52pm66 2/3 of 120?

- simplifying expressions -
**jitzell**, Thursday, April 8, 2010 at 2:20am12 . -12 = p

- 7th grade pre algebra -
**Roni**, Tuesday, September 7, 2010 at 5:12pmI have a problem solving a math problem in my sons math book. We have figured out all except this one. Please Help.. I need to insert parentheses to make this xpression equial 20

7+3.3-1+7

Thank You....

- 7th grade pre algebra -
**jewels**, Thursday, September 9, 2010 at 5:24pmhow to simplify 2p+22q squared-p

- 7th grade pre algebra -
**kosty**, Monday, October 11, 2010 at 7:24amy=2x

- 7th grade pre algebra -
**bob**, Wednesday, October 20, 2010 at 3:39pmi like chicken

- 7th grade pre algebra -
**Mo**, Thursday, October 20, 2011 at 7:07pmthat is not a legitiment question

- 7th grade pre algebra -
**Jake**, Sunday, January 15, 2012 at 3:31pmThe Answer is: Chicken Wings

- 7th grade pre algebra -
**as if**, Monday, April 2, 2012 at 10:51pmhaha fantastic -_-

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