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Unit 3: One-Variable Equations, Inequalities, and their Applications Part 2 TEKS: 8.8A(S) write one-variable equations or inequalities with variables on both sides that represent problems using rational number coefficients and constants 8.8B(S) write a corresponding real-world problem when given a one-variable equation or inequality with variables on both sides of the equal sign using rational number coefficients and constants 8.8C(R) model and solve one-variable equations with variables on both sides of the equal sign that represent mathematical and real-world problems using rational number coefficients and constants Vocabulary Coefficient: a number that is multiplied by a variable(s) Constant: a fixed value that does not appear with a variable(s) Equation: a mathematical statement composed of algebraic and/or numeric expressions set equal to each other Expression: numbers, symbols and operators (such as + and ×) grouped together that show the value of something (no equal or inequality symbol) Inequality: a mathematical statement composed of algebraic and/or numeric expressions set apart by an inequality statement Variable: a letter or symbol that represents a number