What value of x is the solution of the equation 1/7+2x/3 = 15x-3/21?

A. 6

B. 0

C. 4/13

D. 6/29

1/7+2x/3 = (15x-3) / 21 make all terms have a common denominator of 21

3+14x=15x-3 subtract 3 from both sides

14x=15x-6 subtract 15x from both sides

-x=-6 divide both sides by - 1

x=6

*Notice the use of parentheses in this format to make it clear what the numerators and denominators are ...