Answer:
1000 mm
Step-by-step explanation:
The answer to the question

can be simplified to by adding the 7 and 10 to get

.

cannot be simplified any more by combining like terms.
By distributing the 2b into the parentheses, you can simplify the expression:

Here you can just add:

Thus, the only expression that cannot simplify any more using adding like terms is the second,

.
Answer:
7
Step-by-step explanation:
|-16+9|
Calculate the number inside the absolute value
|-7|
Now take the absolute value
7