Answer:
r= 1r- eR = r
Step-by-step explanation:
r-r = ER final answer to equal r= -ER
Commutaive property says
ab=ba or expanded to say
abc=cba
associative peropty =
a(bc)=(ab)c
so using that
first mix them up knowing that we can move the parenthaseese
all possible equivelnt ones are
4*(5*3)
(3*5)*4
3*(5*4)
(3*4)*5
3*(4*5)
Answer is D) Y. It's matching with the results given