5/9v-1/3=2/3v+1/3
simple explanation with all steps

1)ok so first line you transpose to group like terms so the V is on one side of the equal sign and the normal numbers on the other.
2) at all like terms so for the V and the normal you add by fractional addition or subtraction
3)divide both sides of the equation by the coefficient of V which is 7/12
4) finally divide  by the fraction which in other wqords is multiply
             N ur done (Y)
             good luck

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.