204 | X | + | 42 | ( | X | + | 30 | ) | + | 12 | X | × | 4 | ÷ | 5 | = | 219300 |
方程左边 = | 204 | X | + | 42 | ( | X | + | 30 | ) | + | 48 5 | X |
= | 1068 5 | X | + | 42 | ( | X | + | 30 | ) |
1068 5 | X | + | 42 | ( | X | + | 30 | ) | = | 219300 |
方程左边 = | 1068 5 | X | + | 42 | X | + | 42 | × | 30 |
= | 1068 5 | X | + | 42 | X | + | 1260 |
= | 1278 5 | X | + | 1260 |
1278 5 | X | + | 1260 | = | 219300 |
1278 5 | X | = | 219300 | − | 1260 |
1278 5 | X | = | 218040 |
X | = | 218040 | ÷ | 1278 5 |
= | 218040 | × | 5 1278 |
= | 36340 | × | 5 213 |
X | = | 181700 213 |
X | = | 853.051643 |