Can someone me 2/3+1/3x=2x what is x x must equal a fraction

Select a graph that have an equation with a < 0

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents