What is the first step to solve this equation?
n - 4 = -2

The first step is to: -2 minus 4.

Step-by-step explanation:

To find n, you must do the step I mentioned above, and that is the only step you need to do.  -2 minus 4 gives you 2, which is equal to n. n=2

answer: the answer is 23

step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.