represent the unknown number,
1. The sum of a number and twelve.
2. The difference between a number and eight.
3. Three times a number
4. A number squared plus five
5. A number divided by two plus seven
6. Four times the quantity of a number plus six
7. A number times two divided by four
8. Twice a number added to eight
9. A number squared plus seven take a way four
10. A number divided by three plus twelve
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Answer:
1. n + 3
2. n - 8
3. 3n
4. n^2 +5
5. n ÷ 2 + 7
6. 4n + 6
7. n × 2 ÷ 4
8. 8 + 2n
9. n^2 + 7 - 4
10. n ÷ 3 + 12