SOLUTION: I know that -|10| + |10|=20 what about this |-10 + 10| = does this mean it's 20 or would it be 0? what about is it's like this -|-10 + 10| =

Algebra ->  Absolute-value -> SOLUTION: I know that -|10| + |10|=20 what about this |-10 + 10| = does this mean it's 20 or would it be 0? what about is it's like this -|-10 + 10| =      Log On


   

Question 395865: I know that -|10| + |10|=20
what about this |-10 + 10| = does this mean it's 20 or would it be 0?
what about is it's like this -|-10 + 10| =
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Unfortunately, that's incorrect.

-|10|+|10| = 0 because -|10| = -10 and |10| = 10

So

-|10|+|10| = 0
-10+10 = 0
10 - 10 = 0
0 = 0

You're thinking of |-10|+|10|


For the other two...


|-10 + 10| = |10-10| = |0| = 0


-|-10 + 10| = -|10-10| = -|0| = -0 = 0


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Jim