SOLUTION: -x+8+7x-(-1) if x=-10

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Question 112947: -x+8+7x-(-1) if x=-10
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-x%2B8%2B7x-%28-1%29 Start with the given expression


-%28-10%29%2B8%2B7%28-10%29-%28-1%29 Plug in x=-10

10%2B8%2B7%28-10%29%2B1 Negate the negatives. In other words, rewrite -(-10) as +10 and -(-1) as +1


10%2B8-70%2B1 Multiply


-51 Combine like terms


So -x%2B8%2B7x-%28-1%29=-51 when x=-10