I use Tilex, but use rubber gloves, turn on the bathroom fan and all the windows. A mask wouldn't hurt either. It is powerful!
Clorox clean up it takes away hard stains like mildew, black mold . It has a very strong smell so cover ur nose and mouth.
Try using an orange cleaner, 409 has a good one. Whatever you do decide to get, make sure its safe on the surface of your tub.
additive inverse just means the opposite sign. So, the additive inverse of -3/2 is +3/2. that's it! ;)
