The value of x is? i cant find the answer to this

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Miguel’s teacher asks him to color 4/8 of his grid. he must use 3 colors: red, blue, and green. there must be more green sections than red sections. how can miguel color all the sections of his grid to follow all the rules

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?