Question

Solve for n.

9 =
n
2
+ 7


n =

Answer 1

n = 1

Explanation:

2 x 1 = 2

2 + 7 = 9

Answer 2

9/n-2=7

We move all terms to the left:

9/n-2-(7)=0

Domain of the equation: n!=0

n∈R

We add all the numbers together, and all the variables

9/n-9=0

We multiply all the terms by the denominator

-9*n+9=0

We add all the numbers together, and all the variables

-9n+9=0

We move all terms containing n to the left, all other terms to the right

-9n=-9

n=-9/-9

n=1