How do you use symbols to make the statement 71_5_9_2_2 = 61 true?
1 Answer
Feb 28, 2016
#71-5-9+2xx2 = 61#
or simply:
#71-5-9+2+2 = 61#
Explanation:
Multiplication takes precedence over addition or subtraction.
Once you are left with a sequence of additions and subtractions, work from left to right.
#71-5-9+underbrace(2xx2)_xx#
#=underbrace(71-5)_(-)-9+4#
#=underbrace(66-9)_(-)+4#
#=underbrace(57+4)_(+)#
#=61#
Or:
#=underbrace(71-5)_(-)-9+2+2#
#=underbrace(66-9)_(-)+2+2#
#=underbrace(57+2)_(+)+2#
#=underbrace(59+2)_(+)#
#=61#