## Answers

#### Explanation:

#"when evaluating expressions with mixed operations "#

#"there is a particular order that must be followed"#

#"follow the order as set out in the acronym PEMDAS"#

#["P-parenthesis( brackets), E-exponents( powers")#

#"M-multiplication, D-division, A-addition, S-subtraction]"#

#rArr81-(49xx4xx9)larrcolor(red)"exponents"#

#=81-1764larrcolor(red)"multiplication"#

#=-1683larrcolor(red)"subtraction"#

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