Don't let the parenthesis fool you. Since there is a plus in the middle, you can just combine like terms. Let's do number 1:
[tex] 5x+7+x+2 [/tex]
Combine like terms.
[tex] 6x+9 [/tex]
This is as simple as you can get it. Now, let's do number 2:
[tex] -6x+3+x-7 [/tex]
Combine like terms.
[tex] -5x-4 [/tex]
This is as simple as you can get it.
Final Answers:
1.) [tex] 6x+9 [/tex]
2.) [tex] -5x-4 [/tex]
