Question

Example: The sum of 2x and 9 = (2x + 9)

1) The sum of three times a number, x, and 12

2) The sum of 5z and a number, n.

3) The sum of 5z and a number n, decreased by 35.

4) The sum of a number x, and 4, and 7

5) The sum of a number z, and 9 and 18

Answer 1

Explanation:

1) 3x + 12

2) 5z + n

3) 5z + (n-35)

4) x + 4 + 7

5) z + 9 + 18