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7+{(6.38*18.17-14.39)-15.20 } 9
 Mar 7, 2014
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7+{(6.38*18.17-14.39)-15.20 } 9



7+{(6.38*18.17-14.39)-15.20 } 9

7+((6.38*18.17-14.39)-15.20)*9
do inside bracket first (multiply then minus)
then outer bracket
then *9
last add 7

7+((6.38*18.17-14.39)-15.20)*9=
 Mar 7, 2014

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