How do you simplify #(2 + 3) + 42 xx (5 − 3)#?

1 Answer
EZ as pi
Nov 8, 2016

#89#

Explanation:

Rather than blindly following PEDMAS, BODMSA, etc in whatever you know it, count the number of term first. Each term will simplify to a single answer and these are added or subtracted in the last step.

In each term the order is:

  • brackets first,
  • powers and roots
  • multiply and divide

#color(blue)((2 + 3)) color(magenta)(+ 42 xx (5 − 3))" "larr# has 2 terms

#=color(blue)(5) color(magenta)(+ 42 xx 2)#

#= color(blue)(5)color(magenta)(+ 84)#

#=89#

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