In your own words, describe what it means for a number to be a solution to an equation. How do you check to see if a number is a solution to an equation?

For a number to be a solution to an equation, it has to satisfy the equation ... it has to make the equation true.

for example:

2n + 6 = 10 ... n is our unknown number

2n = 10 - 6

2n = 4

n = 4/2

n = 2 ... so the number that makes the equation true is 2

and to check if the number is a solution, we then sub that number back into the original equation to see if it makes the equation true.

2n + 6 = 10

2 (2) + 6 = 10

4 + 6 = 10

10 = 10 (correct)

so our number (n) represents the number 2, and it does make the equation true