In the expression \( 2x - 8 + x + 5 \), we identify the like terms:
- The terms involving \( x \) are \( 2x \) and \( x \).
- The constant terms are \( -8 \) and \( 5 \).
Now, let's look at the options for pairs of like terms:
- -8 and 5 (constant terms) - like terms
- 2x and 5 (one variable term and one constant term) - not like terms
- 2x and -8 (one variable term and one constant term) - not like terms
- 2x and x (both variable terms) - like terms
Thus, the pairs of like terms in the expression are:
- -8 and 5
- 2x and x