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Hey Alan, need help here...
for 10*20-(20/10)+21
if I do braket first, (20/10)=2
then multiplication comes, so, 10*20=200
now I have to do the addition and then the substruction, right? So, 200-2+21=200-23=173!!!
but calculaor giving the result as 219.....!
that becomes the problem for me.
can you tell me that what is the correct working process? please help... :(

 May 5, 2014

Best Answer 

 #1
avatar+33654 
+5

for 10*20-(20/10)+21
if I do braket first, (20/10)=2
then multiplication comes, so, 10*20=200

You are right to here, but your next step is wrong.  You should have 

200-2+21 = 200 + 19 = 219 because -2 + 21 is +19 not -23.

 May 5, 2014
 #1
avatar+33654 
+5
Best Answer

for 10*20-(20/10)+21
if I do braket first, (20/10)=2
then multiplication comes, so, 10*20=200

You are right to here, but your next step is wrong.  You should have 

200-2+21 = 200 + 19 = 219 because -2 + 21 is +19 not -23.

Alan May 5, 2014

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