The difference between a number x and twice y is equal to fifteen.
Twice a number increased by eight is greater than negative four.
Nine less than twice a number equals the same number increased by four?
40 + 2n
2X + 3
There are two possible (and different) answers: 2x + 3y = 12 or 2*(x + 3y)= 12 The first one is (twice a number) increased by (three times another) The second is twice (a number increased by (three times another)).