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Question 505412: i have worked this problem 5 times and come back to 0 each time, but the teacher marks it wrong..Please help me understand what I am doing wrong.Thank you very much.'
40/5(3-1)-4 Original Problem and below is my work / = divide
40/5x2-4
40/10=4
4-4=0
Answer by Taxie(4)   (Show Source):
You can put this solution on YOUR website! 40/5=8
So. 40/5x2 = 8x2=16, else your teacher would have written 40/(5x2)
Therefore your final result is 16-4=12
Ciao!
explanation: always do operations in parentheses first, starting by the innermost in case you have nestling pairs of parentheses. However, do not put parentheses where there aren't any.
You solved this exercise wrongly because you solved it as if it were written:
40/(5(3-1)) - 4. that is you put in a non-existing parenthesis.
Ciao from Italy
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