Explain why the commutative property of addition does not work for subtraction?

becuase it would not equal the same amount were as if you did it in addition it would equal the same amount for example 3+5=8 and 5+3=8  but 5-3=2 but 3-5=-2

Step-by-step explanation:

you would need to know all the numbers that are on there

step-by-step explanation:

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.