Tolong bantu semuanya dijawap kalo semuanya benar nantiku follow dan jadi jawaban terbaik ​

sifat asosiatif penambahan dan perkalian:

a+(b+c) = (a+b)+c

a×(b×c) = (a×b)×c

a. (-15+(-13))+23 = -15+(–13+23) = –15+10 = –5

b. 40+(-30+56) = (40+(-30))+56 = 10+56 = 66

c. (-27+14)+16 = -27+(14+16) = –27+30 = 3

d. 35+(-15+23) = (35+(-15))+23 = 20+23 = 43

e. 20+(-70+49) = (20+(-70))+49 = –50+49 = –1

f. (45×(–20))×5 = 45×(-20×5) = 45×(–100) = –4500

g. 50×(–20×21) = (50×(-20))×21 = –1000×21 = –21000

h. (-25)×(-40×11)=((-25)×(–40))×11 = 1000×11 = 11000

i. –20×(5×32)=((-20)×5)×32 = –100×32 = –3200

j. (-25)×((-4)×17)=((-25)×(–4))×17 = 100×17 = 1700