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Topic 3 Unit A
Equations and Inequalities
Definition | Term |
---|---|
Two values that are not equal. | Inequality |
A mathematical sentence built from expressions using an equal sign. | Equation |
A symbol for a number we don't know yet. It is usually a letter like x or y. | Variable |
6x + 9 = 23 is an.... | Equation |
5s is an example of an | Expression |
2r - 90 > 134 is an.... | Inequality |
Solve 6r - 9 > 27 | r > 6 |
Solve 23 < 7r + 2 | 3 < r |
Solve 7r - 7 < 49 | r < 6 |
Solve 4r - 9 = 35 | r = 11 |