Help will mark brainliest Determine whether each equation is an identity or whether it has no solution.

10.-3(2x + 1) = 2(-3x - 1)

11. 4–3x + 4) = -2(6x – 8)

12. 3n +3(-n + 3) = 3

Multiplying an even number of negative numbers gives an answer that is choose from:

How do you find principle and simple interest

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?