How do you evaluate #21\div ( 3+ 4) \cdot 9- 2^ { 3}#?

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Answer 1 · 2017-09-14T10:38:58

#19#

#21 div (3 + 4) cdot 9 - 2^3#

Using PEDMAS

#21 div (7) cdot 9 - 2^3#

#3 cdot 9 - 2^3#

#3 xx 9 - 2^3#

#27 - 2^3#

#27 - 8#

#19#