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OpenStudy (anonymous):
What is the missing number? 2.1 + (–3.4 + 5) = [ ? + (–3.4)] + 5
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OpenStudy (anonymous):
@jim_thompson5910
OpenStudy (anonymous):
@jim_thompson5910 @Loser66
jimthompson5910 (jim_thompson5910):
hint: associative property of addition a+(b+c) = (a+b)+c this property states that we can add in different grouped orders
OpenStudy (anonymous):
ok...
OpenStudy (anonymous):
I am still confused on how to get the answer... :3
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OpenStudy (anonymous):
@jim_thompson5910
jimthompson5910 (jim_thompson5910):
on the left side, do you see how the numbers match with a,b,c ?
OpenStudy (anonymous):
yess...
jimthompson5910 (jim_thompson5910):
use that identity I gave you
jimthompson5910 (jim_thompson5910):
|dw:1431566001840:dw|
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