Which property of equality can be used to solve this equation in one step? How? 30 = 24 + c

A. Addition Property of Equality by adding 24 to both sides

B. Subtraction Property of Equality by subtracting 24 from both sides

C. Addition property of Equality by adding 30 to both sides

D. Subtraction Property of Equality by subtracting 30 from both sides

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?