having trouble doing these can you help?

8) 2n/5 + (n/6)

12) 3/54 + 1/54

14) 2 7/10 - 3 7/20
i started this one and got
2 14/20 - 3 7/20 then got stuck?

16) -1 2/3 + (-2 1/4)

can you explain how to do?

8)

2n/5+ n/6
= 12n/30 + 5n/30
= 17n/30

14)
2 7/10 - 3 7/20
= 27/10 - 67/20
= 54/20 - 67/20
= -13/20

12) , how can you miss this one, it is much easier than all the ones you had correct in an earlier post?
3/54 + 1/54
= 4/54
= 2/27

try the others and let me know what you got.

sorry #12 is suppose to be:

3 /5y + 1 5/y
I GOT; -13/20

16) is

- 1 2/3 + (-2 1/4)
i got : -2 5/12

are these right?

#12, what happened to the y ?

check your typing of #12, is the second supposed to be a mixed fraction?

16.

-1 2/3 - 2 1/4
= -5/3 - 9/4
= -20/12 - 27/12
= - 47/12 or -3 11/12

Certainly! I can help you with the problems you mentioned.

8) To simplify the expression 2n/5 + n/6, we need to find a common denominator for the fractions. The least common multiple (LCM) of 5 and 6 is 30. Multiply the numerator and denominator of the first fraction by 6, and the numerator and denominator of the second fraction by 5, so that both fractions have a denominator of 30.

2n/5 + n/6 = (12n/30) + (5n/30)

Now that the fractions have the same denominator, we can simply add the numerators:

= (12n + 5n)/30

= 17n/30

So, the simplified expression is 17n/30.

12) To add the fractions 3/54 and 1/54, it's important to note that the denominators are already the same, so we can simply add the numerators:

3/54 + 1/54 = (3 + 1)/54 = 4/54

Since 4 and 54 share a common factor of 2, we can simplify the fraction:

4/54 = 2/27

So, the simplified expression is 2/27.

14) To subtract 2 7/10 - 3 7/20, we need to convert both mixed numbers into improper fractions.

2 7/10 = (2 * 10 + 7)/10 = 27/10

3 7/20 = (3 * 20 + 7)/20 = 67/20

Now that both numbers are in fraction form, we can subtract them:

(27/10) - (67/20)

Find a common denominator, which is 20:

(27/10) - (67/20) = (54/20) - (67/20)

Now subtract the numerators:

(54 - 67)/20 = -13/20

So, the simplified expression is -13/20.

16) To add -1 2/3 and -2 1/4, we need to convert both mixed numbers into improper fractions.

-1 2/3 = (-1 * 3 + 2)/3 = -1/3

-2 1/4 = (-2 * 4 + 1)/4 = -7/4

Now that both numbers are in fraction form, we can add them:

(-1/3) + (-7/4)

Find a common denominator, which is 12:

(-1/3) + (-7/4) = (-4/12) + (-21/12)

Now add the numerators:

(-4 - 21)/12 = -25/12

So, the simplified expression is -25/12.

I hope this explanation helps you understand how to solve these problems. If you have any more questions, feel free to ask!