9 20 | × | 11 | a | + | ( | 9 20 | + | 9 25 | ) | ÷ | 2 | × | 11 | ( | 8 | − | a | ) | = | 1749 50 |
方程左边 = | 99 20 | a | + | ( | 9 20 | + | 9 25 | ) | × | 11 2 | ( | 8 | − | a | ) |
99 20 | a | + | ( | 9 20 | + | 9 25 | ) | × | 11 2 | ( | 8 | − | a | ) | = | 1749 50 |
方程左边 = | 99 20 | a | + | 9 20 | × | 11 2 | ( | 8 | − | a | ) | + | 9 25 | × | 11 2 | ( | 8 | − | a | ) |
= | 99 20 | a | + | 99 40 | ( | 8 | − | a | ) | + | 99 50 | ( | 8 | − | a | ) |
= | 99 20 | a | + | 99 40 | × | 8 | − | 99 40 | a | + | 99 50 | ( | 8 | − | a | ) |
= | 99 20 | a | + | 99 5 | − | 99 40 | a | + | 99 50 | ( | 8 | − | a | ) |
= | 99 40 | a | + | 99 5 | + | 99 50 | ( | 8 | − | a | ) |
= | 99 40 | a | + | 99 5 | + | 99 50 | × | 8 | − | 99 50 | a |
= | 99 40 | a | + | 99 5 | + | 396 25 | − | 99 50 | a |
= | 99 200 | a | + | 891 25 |
99 200 | a | + | 891 25 | = | 1749 50 |
99 200 | a | = | 1749 50 | − | 891 25 |
99 200 | a | = | - | 33 50 |
a | = | - | 33 50 | ÷ | 99 200 |
= | - | 33 50 | × | 200 99 |
= | - | 1 | × | 4 3 |
a | = | - | 4 3 |
a | = | - 1.333333 |