| A | B |
| Twice a number | 2(x) |
| Twice the quantity of three decreased by a number | 2(3 - x) |
| Two plus the difference of six and a number | 2 + (6 - x) |
| Eight divided by the difference of two and a number | 8/(2 - x) |
| Eight plus a number | 8 + x |
| Three less than the quantity of seven decreased by a number | (7 - x) - 3 |
| One half of the quantity of five more than a number | 1/2(5 + x) |
| Five plus the quantity of five decreased by a number | 5 + (5 - x) |
| Five less than a number | (x) - 5 |
| Three plus the quantity of four more than a number | 3 + (4 + x) |
| Twice the quantity of two decreased by a number is six. | 2(2 - x) = 6 |
| One half of the product of eight and a number is twice the same number | 1/2(8x) = 2x |
| One plus the quantity of two decreased by a number equals twice the same number | 1 + (2 - x) = 2x |
| Eight minus the difference of eight and a number is three | 8 - (8 - x) = 3 |
| One plus the quantity of six decreased by a number equals another number | 1 + (6 - x) = y |
| Nine times the quantity of five more than a number is seven | (9)(5 + x) = 7 |
| Six times the quantity of seven increased by a number equals another number | 2(1/2x) = 2y |
| One divided by the sum of two and a number equals another number | 1/(2 + x) = y |
| One divided by the sum of two and a number equals another number | 1/(2 + x) = y |
| Four plus the quantity of two minus a number equals eight | 4 + (2 - x) = 8 |