Practice problem
Which of the following demonstrates the associative property?
2−(3−4)=(2−3)−42-(3-4)=(2-3)-42−(3−4)=(2−3)−4
3−(5−6)=(3−5)−63-(5-6)=(3-5)-63−(5−6)=(3−5)−6
3+(5+9)=(3+5)+93+(5+9)=(3+5)+93+(5+9)=(3+5)+9
Type a concept, like “slope” or “photosynthesis”.