Let's solve the expression step by step:

The expression is:
$70 \div (-4 - 3) + 60$

1. First, solve the parentheses: $-4 - 3 = -7$

2. Now the expression becomes: $70 \div (-7) + 60$

3. Next, perform the division: $70 \div (-7) = -10$

4. Finally, add 60: $-10 + 60 = 50$

So, the result of the expression is:
50

Would you like any further explanations or have other questions? Here are some related questions for deeper practice:

1. What happens if you change the division to multiplication in the expression?
2. How does the result change if the subtraction inside the parentheses is changed to addition?
3. Can you solve a similar expression where the numbers in the parentheses are positive?
4. What is the order of operations, and how does it help in solving such expressions?
5. How would the result change if you swapped the position of the numbers in the expression?

Tip: Always simplify inside the parentheses first, and then follow the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).