Please help with these math problems?

Question

I need help with these, please help!

1. Simplify the expression: 4 over 5x - 3 over x
2. Divide 15x^2 + 10x - 5 by 5x
3. Divide x^2 + 3x - 18 by x -3

Thanks!

Answer 1

4/(5x-3)/x
Multiply by x/x to get 4x/(5x-3)

15x^2 + 10x -5 divided by 5x
Divide each term individually
3x + 2 - 1/x

x^2 + 3x -18 divided by x-3
divide the first term by x to get x
divide the last term by -3 to get +6
check to see if that works
(x-3)(x+6) equals x^2-3x+6x-18 or x^2+3x-18

Answer 2

1.
4/(5x) - 3/x

Multiply thru by 5x

(20x - 15)/5x

(4x -3)/x

2.
(15x^2 + 10x - 5)/(5x)

Divide numerator and denominator by 5

(3x^2 + 2x - 1)/(x)

(3x - 1)(x + 1)/x

3.
(x^2 + 3x - 18 )/(x -3)

(x + 6)(x - 3)/(x - 3)

(x + 6)
.

Answer 3

1. 4 / (5x^2 - 3x) *not sure if this is the form you want it in
2. 3x + 2 - x^(-1) ** or one over x squared instead of x^-1
3. x + 6

haha i hope these are right :)