Question

which of the following is true with explanation
I) 87×(-1)
ii) Division is closed under integers
iii)a÷b=b÷a
iv)a×(b×c)=(a×b)×c
v)a×(b+c)=(ab+ac)
vi)(-7)(-4)=28​

Answer 1

Answer:

5 and 6 are right. i think it’s helpful

Answer 2

Answer:

i) -87

ii) False

iii) False

iv) True

v) True

vi) True

Step-by-step explanation:

ii) System of integers is not closed under division, this means that the division of any two integers is not always an integers.

iii) Let us take an example of 6 and 3. When we divide 6/3= 2, but when we divide 3/6= 0.5. Now let us compare 2 ≠ 0.5.

iv) Let us take an example- a= 6, b= 4, c= 2. 6X (4X2)= (6X4)X2= 48.

v) Let us take an example- a= 2, b=1 and c= 3. 2X (1+3)= (2X1+ 2X3) = 8