Question

Assume a = b and c ≠ 0

Which of the following sentences is not true?

1) a+c=b+c

2) a-c=b-c

3) ac = bc

4) a/c = b/c

5) none of these​

Answer 1

5) none of these is not true because all of them are actually true.

Answer 2

None of these is not true