Practice Solutions

1. The quotient of a number and four is 10

$\frac{n}{4}=10$

2. The sum of a number and seven

n + 7

3. The product of a number and 14

14n

4. Nine less than a number is two

n – 9 = 2

5. Twelve is decreased by a number

12 – n

6. Three times the sum of a number and five is 15

3 (n + 5) = 15

7. The product of –7 and a number, plus 12 is the same as –9

–7n + 12 = –9

8. –23 is equal to the product of a number and two, plus nine

–23 = 2n + 9

9. A number and eight is three

n + 8 = 3

10. Fifteen is divided by a number

$\frac{15}{n}$