Sure! Let’s simplify each expression one by one by
combining like terms. Like terms are terms that have the same variable raised to the same power (or are constants).
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1. `10x + 7 - 5x`
- Combine the x-terms: `10x - 5x = 5x`
- Constant: `+7`
✔ Answer: `5x + 7`
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2. `10y⁴ - 8y³ - 8y² + 16 - 4 + y`
- Group like terms:
- `y⁴`: only `10y⁴`
- `y³`: only `-8y³`
- `y²`: only `-8y²`
- `y`: only `+y`
- Constants: `16 - 4 = 12`
✔ Answer: `10y⁴ - 8y³ - 8y² + y + 12`
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3. `6s - 8s + 4 + 6s`
- Combine s-terms: `6s - 8s + 6s = (6 - 8 + 6)s = 4s`
- Constant: `+4`
✔ Answer: `4s + 4`
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4. `v - 3v + 6 + 8 - 3v²`
- Group like terms:
- `v` terms: `v - 3v = -2v`
- Constants: `6 + 8 = 14`
- `v²` term: `-3v²`
✔ Answer: `-3v² - 2v + 14`
*(Note: Usually we write highest degree first)*
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5. `10a + 8 + 3 - a`
- Combine a-terms: `10a - a = 9a`
- Constants: `8 + 3 = 11`
✔ Answer: `9a + 11`
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6. `3x + 9 + 4x - 5`
- Combine x-terms: `3x + 4x = 7x`
- Constants: `9 - 5 = 4`
✔ Answer: `7x + 4`
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7. `2 + x + 4 - x + 1`
- x-terms: `x - x = 0` → they cancel out
- Constants: `2 + 4 + 1 = 7`
✔ Answer: `7`
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8. `12n - 8 - 2n + 10 - 4`
- n-terms: `12n - 2n = 10n`
- Constants: `-8 + 10 - 4 = -2`
✔ Answer: `10n - 2`
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9. `8d - 4 - 2d + 5`
- d-terms: `8d - 2d = 6d`
- Constants: `-4 + 5 = 1`
✔ Answer: `6d + 1`
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10. `8y + 5 + 3 + 9 - y - 1`
- y-terms: `8y - y = 7y`
- Constants: `5 + 3 + 9 - 1 = 16`
✔ Answer: `7y + 16`
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11. `-3b - b² - 2b²`
- b² terms: `-b² - 2b² = -3b²`
- b term: `-3b`
✔ Answer: `-3b² - 3b`
*(Write higher degree first)*
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12. `u² + 5u + u²`
- u² terms: `u² + u² = 2u²`
- u term: `+5u`
✔ Answer: `2u² + 5u`
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##
✔ Final Answers:
1. `5x + 7`
2. `10y⁴ - 8y³ - 8y² + y + 12`
3. `4s + 4`
4. `-3v² - 2v + 14`
5. `9a + 11`
6. `7x + 4`
7. `7`
8. `10n - 2`
9. `6d + 1`
10. `7y + 16`
11. `-3b² - 3b`
12. `2u² + 5u`
Let me know if you want to see step-by-step work for any specific problem!
Parent Tip: Review the logic above to help your child master the concept of evaluating algebraic expressions worksheet pdf.