> Equations and Inequalities <
Equations and Inequalities
An equation is a mathematical statement, in symbols, that two
things are the same (or equivalent). Equations are written with
an equal sign, as in 2 + 3 = 5.
Number sentences containing the equal sign (=)
symbol are equations.
equation examples: 8 + 9 =17 7 = 7 15 - 9 = 10 ?
An equation could be true are false. As you know 15 - 9 = 6 not 10
Inequalities
An Inequality is a statement about the relative size or order of
two objects. Could be
greater than > less than < or not equal to ≠
Example: 4 x 4 < 20 This inequality says 4 times 4 is less than
20.
Number sentences that do not contain an equal sign
(=) are called inequalities
Inequalities examples:
7 + 9 < 20 20 > 9 * 3 ? 25 ≠ 4 * 5
Just like equations, Inequalities could be true are false. As you
know the inequality 20 > 9 x 3 is false, because 9 x 3 equals 27
more inequalities signs
≥ greater than or equal to
≤ less than or equal to