4. Equations & Inequalities

4.01 Identifying and writing equations

4.02 Review: One-step equations

Investigation: Modeling equations

4.03 Two-step equations

4.04 Problem solving with equations

4.05 Review: Identifying and writing inequalities

4.06 Review: Graphing inequalities

4.07 One-step inequalities

4.08 Two-step inequalities

4.09 Problem solving with inequalities

United States of America MD

Grade 7

4.08 Two-step inequalities

Interactive practice questions

Solve the following inequality: $21+7x\ge21$21+7x≥21

Easy

1min

Solve the following inequality: $3x+27>3$3x+27>3

Easy

1min

Solve the following inequality: $6x-54\ge30$6x−54≥30

Easy

< 1min

Solve the following inequality: $3n-9>9$3n−9>9

Easy

< 1min

Outcomes

7eE.B.4

Use variables to represent quantities in a realworld or mathematical problem, and construct simple equations and inequalities to solve problems by reasoning about the quantities.

7eE.B.4b

Solve word problems leading to inequalities of the form px q > r or px q < r, where p, q, and r are specific rational numbers. Graph the solution set of the inequality and interpret it in the context of the problem.

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