Alot of this section's beginning felt like it was mostly just memorization of the different types of numbers. It consists of counting (1 2 3 4...), whole (0 1 2 3 4...), integers (...-2 -1 0 1 2 3...), rational (any fraction that's decimal ends), and (never ending number fractions) irrational numbers. It's gonna be hard to memorize them all, but I'll get a hold of them eventually. Next came solving linear inequalities. This part was actually fairly easy for me, it was basically College prep all over again. Basically to solve it, you have to get X alone by working with the properties of inequalities.
PROPERTIES OF INEQUALITIES (how I understand it)
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Suppose 'a' and 'b' are real numbers and 'c' is a nonzero real number.
Then the inequality a < b is equivalent to:
(i) a + c < b + c (what you do to one side of the inequality you HAVE to do to the other)
(ii) ac < bc, for c > 0. (same as [i] but with multiplication)
(iii) ac > bc, for c < 0. (you have to flip the inequality sign if it's less than 0.)
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