Question

15=4.3n-2(n-4)

Answer 1

work it out so

15=4.3n-2n+8

now just combined the terms, get the n alone on one side and dived by the number in front of n

Answer 2

15=4.3n-2n+8
15=2.3n+8
7=2.3n
n=3.04

Answer 3

Correct assuming we are keeping decimal form, just make sure to read the instructions