Answer:
A process where if two things are equal, one can be put in the place of the other and nothing will change
Explanation:
In mathematics, the substitution method is a process where if two things or expressions are equal (for example, a letter and the value of the number), one can be put in the place of the other and nothing will change.
Take a look at the following equation:
X + 7 = 10
3 + 7 = 10
In this case, we can substitute the letter X by the number 3 and nothing will change because they both have the same value (X is equal to 3).
