SOLUTION: what is the answer to -130=-5(2-8n)

Algebra ->  Trigonometry-basics -> SOLUTION: what is the answer to -130=-5(2-8n)      Log On


   

Question 892297: what is the answer to -130=-5(2-8n)
Found 2 solutions by KMST, Alan3354:
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
I would start by multiplying both sides times (-1), because I often lose minus signs on transcription, and I failed an exam because of that half a century ago.
-130=-5%282-8n%29
%28-1%29%2A%28-130%29=%28-1%29%2A%28%28-5%29%282-8n%29%29 (optional baby step)
%28-1%29%2A%28-130%29=%28%28-1%29%2A%28-5%29%29%2A%282-8n%29%29 (optional baby step)
130=5%282-8n%29
130=5%2A2-5%2A8n%29 (optional baby step)
130=10-40n%29
130%2B40n=10
40n=10-130
40n=-120
n=%28-120%29%2F40
highlight%28n=-30%29

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Depends on the question.
If you want to solve for n, you should say, "Solve for n."
-130=-5(2-8n)
times -1
130 = 5(2-8n)
Divide by 5
26 = 2-8n
24 = -8n
n = -3