To solve this system by substitution, which expression could be substituted for x
![To solve this system by substitution which expression could be substituted for x class=](https://us-static.z-dn.net/files/da9/da1aceeb2fbe29f1304fb792c2a4f2eb.png)
Answer:
The answer is b
Step-by-step explanation:
you are substituting those numbers in for "x" because that is what the variable "x" will equal. To solve, you just simplify the terms.