4d − 7a + 8d = | 2n − 4x + 10n = | 6q + a − 8q = |
9y + 6a − 2y = | 2y + 5m + 4y = | 2q − 2m − 2q = |
9d − 5a + 3d = | 4b + 9a + 8b = | 6b + 8a + 10b = |
2b + x + 7b = | y + 8c + 3y = | q + 2c − 9q = |
2y − c − 2y = | 2d + 10g − 5d = | y − 6m + 2y = |
2y − 8p + 8y = | 6q − 7a − 9q = | 3n + 9x + 5n = |
10d − 7m − 5d = | 7h − 3g + 2h = | 2h + 10p − 9h = |
10d + c + 6d = | 3d − 6c + 4d = | b − 8x + 2b = |
h + c + h = | 10q + 9c + 7q = | 9y − 4c + 8y = |