X | ÷ | 87 | − | 20 | ÷ | 1100 | − | 10 | ÷ | 200 | = | 381 200000 | ( | X | + | 30 | ) |
方程左边 = | X | × | 1 87 | − | 1 55 | − | 1 20 |
= | 1 87 | X | − | 3 44 |
1 87 | X | − | 3 44 | = | 381 200000 | ( | X | + | 30 | ) |
方程右边 = | 381 200000 | X | + | 381 200000 | × | 30 |
= | 381 200000 | X | + | 1143 20000 |
1 87 | X | − | 3 44 | = | 381 200000 | X | + | 1143 20000 |
1 87 | X | − | 381 200000 | X | = | 1143 20000 | + | 3 44 |
166853 17400000 | X | = | 1143 20000 | + | 3 44 |
166853 17400000 | X | = | 27573 220000 |
X | = | 27573 220000 | ÷ | 166853 17400000 |
= | 27573 220000 | × | 17400000 166853 |
= | 27573 11 | × | 870 166853 |
X | = | 23988510 1835383 |
X | = | 13.07003 |