Write an algebraic expression or equation for each of the following Mathematical phrases or sentences. Underline the variable. (2 pts each item - 1point for writing the correct expression or equation and 1 point for underlining the variable)
1. fifteen is subtracted from the quotient of a and b
2. the sum of three different numbers
3. a number diminished by seven
4. thirty five divided by a number is five
5. four greater than two times a number is equal to the number itself added to five​