| A | B |
| The product of -2 and a number | -2/x |
| Twice the difference of a numberand 13 | 2(x - 13) |
| Three subtracted from a number | x - 3 |
| The product of -5 and a number | -5x |
| The product of -5 and a number, decreased by 50 | -5x - 50 |
| The quotient of 70 and the sum of a number and 6 | 70/x+6 |
| Eleven added to twice a number | 2x + 11 |
| The sum of -5 and a number | -5 + x |