| ( | 233 2 | + | 202 | ) | ÷ | 28 | × | x | + | 180 | ÷ | 28 | × | ( | x | + | 15 | ) | + | 112 | ÷ | 28 | × | ( | x | + | 30 | ) | = | 2358 |
| Left side of the equation = | ( | 233 2 | + | 202 | ) | × | 1 28 | x | + | 45 7 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| ( | 233 2 | + | 202 | ) | × | 1 28 | x | + | 45 7 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) | = | 2358 |
| Left side of the equation = | 233 2 | × | 1 28 | x | + | 202 | × | 1 28 | x | + | 45 7 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 233 56 | x | + | 101 14 | x | + | 45 7 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 91 8 | x | + | 45 7 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 91 8 | x | + | 45 7 | x | + | 45 7 | × | 15 | + | 4 | ( | x | + | 30 | ) |
| = | 91 8 | x | + | 45 7 | x | + | 675 7 | + | 4 | ( | x | + | 30 | ) |
| = | 997 56 | x | + | 675 7 | + | 4 | ( | x | + | 30 | ) |
| = | 997 56 | x | + | 675 7 | + | 4 | x | + | 4 | × | 30 |
| = | 997 56 | x | + | 675 7 | + | 4 | x | + | 120 |
| = | 1221 56 | x | + | 1515 7 |
1221 56 | x | + | 1515 7 | = | 2358 |
1221 56 | x | = | 2358 | − | 1515 7 |
1221 56 | x | = | 14991 7 |
| x | = | 14991 7 | ÷ | 1221 56 |
| = | 14991 7 | × | 56 1221 |
| = | 4997 | × | 8 407 |
| x | = | 39976 407 |
| x | = | 98.22113 |