Jamal uses the steps below to solve the equation 6x – 4 = 8. step 1: 6x – 4 + 4 = 8 + 4 step 2: 6x + 0 = 12 step 3: 6x = 12 step 4: = step 5: 1x = 2 step 6: x = 2 which property justifies step 3 of his work? a). the addition property of equality b). the identity property of addition c). the multiplication property of equality d). the identity property of multiplication

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?