| x | ÷ | 3990 | × | 3 | × | 51 | + | x | = | 1674786687 100000 |
| Left side of the equation = | x | × | 51 1330 | + | x |
| = | 1381 1330 | x |
1381 1330 | x | = | 1674786687 100000 |
| x | = | 1674786687 100000 | ÷ | 1381 1330 |
| = | 1674786687 100000 | × | 1330 1381 |
| = | 1674786687 10000 | × | 133 1381 |
| x | = | 222746629371 13810000 |