Solving equations and inequalities
Practice finding unknown values, working with inequalities, and turning word problems into equations.
- A variable represents the unknown
- Find a value for the variable
- Check it in the original equation
- 3x + 6 = 18
- 3x = 12
- x = 4
- Check: 3(4) + 6 = 18
- T = a + b
- a = T − b
- Number series trainer
- Algebra & functions with worked steps
- Reading comprehension sets
Paid once, no subscription. Ask for a refund within 7 days of buying if you’ve done less than 25% of the class.
Lessons in this chapter
3 lessons, about 5 minutes each
Built on Preparing for the Test · Web page, site footer ©2019; served 2026-11-12 · Algebra and Functions
Sample questions
From the class’s practice bank. Pick an answer, then check it.
Question 1
3(3 + 2)² − 16 = ?
- 23
- 209
- 14
- 59
Show the answer
D. 59. Parentheses: 3 + 2 = 5. Exponent: 5² = 25. Multiply: 3 × 25 = 75. Subtract: 75 − 16 = 59. 209 is the trap: it multiplies first.
Question 2
2 + 3 × 7 − 9 ÷ 3 = ?
- 20
- 14
- 23
- 32
Show the answer
A. 20. Multiply and divide first: 3 × 7 = 21, 9 ÷ 3 = 3. Then 2 + 21 − 3 = 20. Working strictly left to right gives 23.
Question 3
13 + 8 × 5 − 6 ÷ 2 = ?
- 47
- 96
- 102
- 50
Show the answer
D. 50. Multiply and divide first: 8 × 5 = 40, 6 ÷ 2 = 3. Then 13 + 40 − 3 = 50. Working strictly left to right gives 96.
The full class, $39 once.
Paid once, no subscription. Ask for a refund within 7 days of buying if you’ve done less than 25% of the class.
- Number series trainer
- Algebra & functions with worked steps
- Reading comprehension sets
Not affiliated with IBEW, NECA, ETA or any JATC. Original practice questions only.
More from Union Aptitude Prep
- The test · 3 lessons
- Number series · 4 lessons
- Algebra basics · 3 lessons
- Polynomials and functions · 3 lessons
- Reading comprehension · 4 lessons