None. There are no units of measurement in this equation.
the answer to that is 5
Commutative
8 + 5 + 4 = 17
5. Just do 9 minus 4. 5 plus 4 equals 9
19
there is no unit.
7+2+5= 14 35 42
the answer to that is 5
true
Commutative
27
8 + 5 + 4 = 17
5. Just do 9 minus 4. 5 plus 4 equals 9
No.
false
yes
19