Question

In m + 8, the variable can have any value.

In m + 8 = 12, the variable m can have any value and be a solution.

Answer 1

4

Explanation:

Actually, for this equation to be true, m must be 4, as if a + b = c, then c - b is equal to a and vice versa. Here’s an example: If 1 + 2 = 3, then 3 - 2 = 1 and 3 - 1 = 2. So you see, 12 - 8 is equal to 4.