nengliangli1715 nengliangli1715
  • 20-03-2024
  • Mathematics
contestada

Which of the following uses the commutative law of addition?
a. 6+12=18
b. 6+12=12+6
c. 6+12=7+11
d. 6+12=6+12
e. 6+12=9+9

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