8x-6x-3 what do you do when there are two multiplication signs in multiplicating integers?

A math sentence involving multiple operations is evaluated according to the Order of Operations. Multiplication is done left to right.

(8) × (-6) × (-3)

= ((8) × (-6)) × (-3)

= (-48) × (-3)

= 144

The associative and commutative properties of multiplication allow you to rearrange this to any convenient order. You can also remove factors of -1 from the negative numbers and deal with those separately, if you like.

8 × -6 × -3

= 8 × -1 × 6 × -1 × 3

= (-1)×(-1) × 8 × 6 × 3

= 1 × 8 × 6 × 3

= 8 × 6 × 3 . . . . . . 1 times anything is that thing. That's the multiplicative identity property.

= 3 × 6 × 8 . . . . . if you want. (Order for multiplication of numbers doesn't matter. It does matter when multiplying certain other things, like matrices or vectors.)

b) the dogs need to shift their focus to human scent.