First, simplify the inequality by getting the x term with a coefficient of 1.
Divide both sides by -7. When you multiply or divide an equality by a negative number, you flip the inequality sign the opposite way.
-7x / -7 < -21 / -7
x > 3
In set build notation is would look like this: {x | x > 3}
Which would be read as "the set of all x, such that, x is greater than 3".
Answer:
All values are identical.
Step-by-step explanation:
The set of numbers

belongs to is termed as B. irrational numbers.
There are two main types of numbers, real and imaginary. Real numbers are also subdivided into rational and irrational numbers. Irrational numbers are numbers that cannot be written in a fractional form which is the opposite of rational numbers. These can either be non-terminating or repeating. An example of a non-terminating irrational number is the value of pi (3.1415...) and an example of a repeating irrational number is 15.55555...
What exactly is the question? Those are statements.