Write the following using numbers, literals and signs of basic operations: The sum of 6 and `xdot` 3 more than a number `ydot` One-third of a number `xdot` One-half of the sum of number `x\ a n d\ y` Number `y` less than a number 7. 7 taken away from `x` 2 less than the quotient of `x\ b y\ ydot` 4 times `x` taken away from one-third of `y` Quotient of `x` by 3 is multiplied by `ydot`