Final answer:
The expression 50 + 5/13p evaluates to 40 when p is -26. The arithmetic involves substitution, multiplication, division, and addition.
Step-by-step explanation:
To evaluate 50 + 5/13p when p= -26, you must substitute -26 for p in the expression. After the substitution, the expression becomes 50 + (5/13)(-26). Next, you solve the expression within the parentheses first. Multiply 5 by -26, which equals -130, then divide -130 by 13 to get -10. Now, add this result to 50, which will give you 40 as the final answer.