Our teacher had 1/2 of an eraser left. she gave her 2 students equally. how uchiha eraser did each student receive?

Question: what is the value of x 4x-2= (-7) +5x. it would be greatly appreciated if someone could actually explain to me step by step

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Divide. write in the simplest form. 4 1/6 divided by 10