Question

Algebra uses letters for numbers that are unknown. Any letter can be used.

Example:

3 + m means: 3 and the unknown number (m) are added.

10 - t means: the unknown number (t) is subtracted by 10


6s means 6 times the unknown number (s).

These letters are also called variables, unknowns, or literal numbers.

What does each of the following mean?

1. a. 8 + t

b. 10rst

2. a. t - 4