450 | + | ( | 15 | ( | x | ÷ | 10 | ) | − | 8 | ) | × | 75 | = | 735 |
方程左边 = | 450 | + | 15 | ( | x | ÷ | 10 | ) | × | 75 | − | 8 | × | 75 |
= | 450 | + | 1125 | ( | x | ÷ | 10 | ) | − | 600 |
= | - | 150 | + | 1125 | ( | x | ÷ | 10 | ) |
= | - | 150 | + | 1125 | x | ÷ | 10 |
= | - | 150 | + | 225 2 | x |
- | 150 | + | 225 2 | x | = | 735 |
225 2 | x | = | 735 | + | 150 |
225 2 | x | = | 885 |
x | = | 885 | ÷ | 225 2 |
= | 885 | × | 2 225 |
= | 59 | × | 2 15 |
x | = | 118 15 |
x | = | 7.866667 |