Question

1/a-1 -1/a+1 - 2/2a+1 - 2/2a-1​

Answer 1

Answer:

-2a

Step-by-step explanation:

Hope this helps

Answer 2

Answer:

-2-$\frac{2}{a}$

Step-by-step explanation:

I broke up the fractions so that it is easier.

$\frac{1}{a-1}$ - $\frac{1}{a+1}$ - $\frac{2}{2a+1}$ - $\frac{2}{2a-1}$ = ($\frac{1}{a}$ - $\frac{1}{1}$) - ($\frac{1}{a}$ + $\frac{1}{1}$) - ($\frac{2}{2a}$ + $\frac{2}{1}$) - ($\frac{2}{2a}$ - $\frac{2}{1}$)

Now I remove the brackets. One plus and one minus make one minus and two minus makes one plus.

($\frac{1}{a}$ - $\frac{1}{1}$) - ($\frac{1}{a}$ + $\frac{1}{1}$) - ($\frac{2}{2a}$ + $\frac{2}{1}$) - ($\frac{2}{2a}$ - $\frac{2}{1}$) =$\frac{1}{a}$ - $\frac{1}{1}$ - $\frac{1}{a}$ - $\frac{1}{1}$ - $\frac{2}{2a}$ - $\frac{2}{1}$ - $\frac{2}{2a}$ + $\frac{2}{1}$

Remove redundancies. ($\frac{1}{a}$ - $\frac{1}{a}$ = 0)

$\frac{1}{a}$ - $\frac{1}{1}$ - $\frac{1}{a}$ - $\frac{1}{1}$ - $\frac{2}{2a}$ - $\frac{2}{1}$ - $\frac{2}{2a}$ + $\frac{2}{1}$ = -$\frac{2}{1}$ -$\frac{4}{2a}$

Simplify the fractions.

-$\frac{2}{1}$ -$\frac{4}{2a}$  = -2-$\frac{2}{a}$