Study guides

Q: -7n plus 2n plus 9 equals?

Write your answer...

Submit

Related questions

I'm assuming you are solving for n.2n + 6 = 7n - 9 {add nine to each side}2n + 15 = 7n { subtract 2n from each side}15 = 5n {divide each side by 5}3 = n

7n -1n,0n,1n,2n,3n,4n,5n,6n,7n 1 2 3 4 5 6 7 8 9

n=6

3 + 3n = 9 + 2n + 4n n = -2

I don't know, just please helpp!

6+5n=2n-9Isolate the variable by subtracting 2n and 6 from both sides.5n-2n=-9-63n=-15n=-5

6n -3=2n+9 6n-2n=9+3 4n=12 n=12/4 n=3

18n + 27 or 9(2n + 3)

2n-9=-4

7n - 11n = 3n + 9 Collecting all the terms with n on the left, (7-11-3)n = 9 -7n = 9 Divide both sides by -7 to give n = -9/7

3n - 9 + 4n = 8nCombine like terms:7n - 9 = 8nSubtract 7n from both sides:-9 = n

4n3 - 12n2 - 7n + 9

Subract 5n from both sides and you get 9=-3n, then divide bother sides by -3 and you get n= -3

5n + 1 = 10 + 2n5n - 2n + 1 - 1 = 10 - 1 + 2n - 2n3n = 93n/3 = 9/3n = 3

If 'n' is 8, then (2n - 7) is 9 .

5n - 9 = 2n + 6 : Add 9 to both sides 5n = 2n + 15 : Subtract 2n from both sides 3n = 15 : Divide both sides by 3 n = 5

To find the value of n -7n=63 n=63/-7 n-9 Hence,-9 is the required answer.

'n' can be any number, but when applied to (2n + 4), n = 2.5

If n = 9 then 2n must be 18.

If En = 2n then E9 = 2*9 = 18

3n + 9 = 3(n + 3)

Subtract 2n from each side: 3n - 9 = 6 Add 9 to each side: 3n = 15 Divide both sides by 3: n = 5 Therefore, n = 5

4n - 2n = 18 Therefore, 2n = 18 Therefore, n = 18/2 = 9

12 plus 9 equals 21.

9 plus 87 equals 96.