Algebra?! PLEASE HELP?

Question

Simplify the following? HELP! And show workings! 

1) 3(x+2) / 8x+16 

2) x/3 + 2x/5 

3) (2x+4) / x^2 - x - 6 

4) 2/x - 3/x-1 

5) 6/x - 2/x+5 = 1

Answer 1

The simplified expression is 3x /8.

Least Common Multiple of 3 and 5 is 15.

The simplified expression is 11x /15.

The simplified expression is 2/(x - 3).

Answer 2

The simplified expression is -(2 + x ) / x (x - 1).

Therefore x = -6, 5.