9th Grade Substitution Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 9th Grade algebraic expressions worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Algebraic Expressions9th Grade Substitution Worksheet — Level 2 — Practice Set 4 — Answers
Replace the letter with the number, then calculate. Use parentheses for negative values.
1.Find the value of −4x − 8 when x = 7
Answer: −36
- −4 × 7 − 8
- = −28 − 8 = −36
2.Find the value of 3x − 5 when x = −1
Answer: −8
- 3 × (−1) − 5
- = −3 − 5 = −8
3.Find the value of 2x − 6 when x = −5
Answer: −16
- 2 × (−5) − 6
- = −10 − 6 = −16
4.Find the value of −5x when x = −1
Answer: 5
- −5 × (−1) + 0
- = 5 + 0 = 5
5.Find the value of −x − 5 when x = −5
Answer: 0
- −1 × (−5) − 5
- = 5 − 5 = 0
6.Find the value of 3x − 3 when x = 1
Answer: 0
- 3 × 1 − 3
- = 3 − 3 = 0
7.Find the value of −4x − 4 when x = −2
Answer: 4
- −4 × (−2) − 4
- = 8 − 4 = 4
8.Find the value of 9x when x = 3
Answer: 27
- 9 × 3 + 0
- = 27 + 0 = 27
9.Find the value of x + 4 when x = 1
Answer: 5
- 1 × 1 + 4
- = 1 + 4 = 5
10.Find the value of −2x − 7 when x = 9
Answer: −25
- −2 × 9 − 7
- = −18 − 7 = −25
11.Find the value of 2x − 3 when x = 5
Answer: 7
- 2 × 5 − 3
- = 10 − 3 = 7
12.Find the value of 9x − 7 when x = −4
Answer: −43
- 9 × (−4) − 7
- = −36 − 7 = −43
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