( | x | − | 300 | − | 360 | ) | × | 3 4 | ÷ | 3000 | = | ( | ( | x | − | 300 | ) | × | 3 4 | − | 75 | ) | ÷ | 3150 |
方程左边 = | ( | x | − | 300 | − | 360 | ) | × | 1 4000 |
( | x | − | 300 | − | 360 | ) | × | 1 4000 | = | ( | ( | x | − | 300 | ) | × | 3 4 | − | 75 | ) | ÷ | 3150 |
方程左边 = | x | × | 1 4000 | − | 300 | × | 1 4000 | − | 360 | × | 1 4000 |
= | x | × | 1 4000 | − | 3 40 | − | 9 100 |
= | 1 4000 | x | − | 33 200 |
1 4000 | x | − | 33 200 | = | ( | ( | x | − | 300 | ) | × | 3 4 | − | 75 | ) | ÷ | 3150 |
方程右边 = | ( | x | − | 300 | ) | × | 3 4 | × | 1 3150 | − | 75 | × | 1 3150 |
= | ( | x | − | 300 | ) | × | 1 4200 | − | 1 42 |
= | x | × | 1 4200 | − | 300 | × | 1 4200 | − | 1 42 |
= | x | × | 1 4200 | − | 1 14 | − | 1 42 |
= | 1 4200 | x | − | 2 21 |
1 4000 | x | − | 33 200 | = | 1 4200 | x | − | 2 21 |
1 4000 | x | − | 1 4200 | x | = | - | 2 21 | + | 33 200 |
1 84000 | x | = | - | 2 21 | + | 33 200 |
1 84000 | x | = | 293 4200 |
x | = | 293 4200 | ÷ | 1 84000 |
= | 293 4200 | × | 84000 |
= | 293 | × | 20 |
x | = | 5860 |