# Math Help - Help rearranging

1. ## Help rearranging

Hi
Can somebody explain the change (in words) of how the upper part becomes the lower part?
Thanks

2. Originally Posted by 200001
Hi
Can somebody explain the change (in words) of how the upper part becomes the lower part?
Thanks

Dear 200001,

You can take the reciprocal of both sides. Then $\frac{1}{8\sqrt{x}}$ becomes $8\sqrt{x}$ and $e^{1-4x}$ becomes $e^{-(1-4x)}=e^{4x-1}$