Answer:
N= 15000
Step-by-step explanation:
This not True
x-3=± 4 (mistakes)
x=3±4
x=3+4 and x=3-4
x=7 x=-1
x=6
5x+4+8x-3=79
=>13x=79-4+3
=>13x=78
=>x=78/13
=>x=6
15a
Step-by-step explanation:3times3times3times3times3