Question

Evaluate. Let n = 2.
http://static.k12.com/bank_packages/files/media/mathml_e0fbaeb6291028483a9180f14239aced7ce0c013_1.gif


Enter the answer in lowest terms.

Answer 1

Plug in '2' for 'n':

\(\sf \dfrac{8n + 3n - 7}{6 \cdot 2n - 3(n - 1)}\)

\(\sf \dfrac{8(2) + 3(2) - 7}{6 \cdot 2(2) - 3(2 - 1)}\)

First multiply 8 * 2

Answer 2

16

Answer 3

Yes, now what's 3 * 2?

Answer 4

6

Answer 5

Yes, so we have: 16 + 6 - 7, can you simplify that?

Answer 6

yup 15

Answer 7

Yes, so for the top we have 15.

Now what's 2 * 2?

Answer 8

4

Answer 9

Yes, now multiply 6 * 4

Answer 10

24

Answer 11

Yes, so we have:

\(24 - 3(2 - 1)\)

Distribute -3 into the parenthesis:

\(24 - 6 + 3\)

Subtract 24 - 6

Answer 12

30

Answer 13

Yes, now add 30 + 3

Answer 14

33

Answer 15

No wait, 24 - 6 isn't 30..

Answer 16

it's 18

Answer 17

srry i added 24 and 6

Answer 18

ok wat kn @iGreen.

Answer 19

Yes, now we add 18 + 3

Answer 20

21

Answer 21

Can you do that?

Answer 22

Yes, so we have 15/21 which simplifies to 5/7

Answer 23

brb

Answer 24

k i'm back

Answer 25

@iGreen.