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December 22, 2014

December 22, 2014

Posted by **Sara!** on Thursday, June 3, 2010 at 7:00pm.

1.2x/3 + 1/3 - x/8= 2/3

2. 3n + 9/10 + n/5= -2 3/10

3. 3k/4 - 28 - 2k/3 = 37

thank you can you please show me step by step how you got the answer?

- math -
**Reiny**, Thursday, June 3, 2010 at 7:20pmI will do one for you, and you try the other two

2.

3n + 9/10 + n/5= -2 3/10

3n + 9/10 + n/5= -23/10

looks like 10 is the lowest common denominator, so multiply each term by 10

30n + 9 + 2n = -23

32n = - 23 - 9

32n = - 32

n = -1

hint: for the first, multiply each term by 24

for the third, multiply each term by 12

- math -
**Sara!**, Thursday, June 3, 2010 at 7:39pmi got for # 3 8/13 and plugged in the number for the letters and got it wrong. what is the correct way to solve it thank you

- math -
**Reiny**, Thursday, June 3, 2010 at 9:29pm#3

3k/4 - 28 - 2k/3 = 37

times 12

9k - 336 - 8k = 444

k = 444+336

k = 780

check:

Left side = 3(780)/4 - 28 - 2(780)/3

= 585 - 28 - 520

= 37

= right side

My answer is correct, how did you get 8/13 ?

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