2. break this down into 2 parts. -4/2 and xsq/x

-4/2 is -2 and xsq/x is x so your answer is -2x

3. i think you are wanting to multiply 12x by 3/8. so that would be 12x/1 times 3/8. you can reduce the 12 and the 8 to 3 and 2. so now you have 3x/1 times 3/2. this gives you an answer of 9x/2 or 4 x/2

4. when you divide by a fraction, you simply multiply by the inverse 10 times 4/3x that gives you 40/3x or 13 1/3x

This is simply negative b divided by positive b. When you have a negative divided by a positive, the result will be negative.

Answer: -1

2. -4xsquared / 2x

cancel out one X from the top and one from the bottom.

-4x/2

Answer: -2x

3. 12x(3/8)

This is 12x times 3/8

36/8 x

Answer: 9/2x

4. 10 / (3x/4)

This is 10 divided by 3x/4

Multiply the reciprocal: 10/1 times 4/3x

40/3x

Answer: 13 1/3x