9 x (-10) +42 / (-6)

Using the order of operations (PEMDAS), we solve this expression step by step:

9 x (-10) + 42 / (-6)

Multiplication: 9 x (-10) = -90

Division: 42 / (-6) = -7

Now we have: -90 + (-7)

Addition: -90 + (-7) = -97

Therefore, 9 x (-10) + 42 / (-6) equals -97.