Use properties of operations to generate equivalent expressions. 

7.EE.1 Add, subtract, factor, and expand linear expressions with rational coefficients. 

7.EE.2 Understand that rewriting an expression in different forms in a problem context can shed light on the problem and how the quantities in it are related.

Solve real-life and mathematical problems using numerical and algebraic expressions and equations. 

7.EE.3 Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form.

7.EE.4 Use variables to represent quantities in problems and construct simple equations and inequalities to solve problems.

a. Solve word problems leading to equations of the form px + q = r and p(x + q) = r.

7.EE.4 Use variables to represent quantities in problems and construct simple equations and inequalities to solve problems.

b. Solve word problems leading to inequalities of the form px + q > r or px + q < r. Graph the solution set of the inequality and interpret it in the context of the problem.