1) twice b added to a
The sum of a and twice b
twice b more than a
2) the difference between thrice x and four times y
the product of 4 and y less than thrice x
the product of 3 and x less the product of 4 and y
(note that "less than" is not the same as "less")
3. the quotient of the product of twice x and y
Twice x divided by y
the product of 2 and x divided by y
