65 | × | 9 20 | + | ( | x | × | 11 20 | ) | = | 140 |
方程左边 = | 117 4 | + | ( | x | × | 11 20 | ) |
117 4 | + | ( | x | × | 11 20 | ) | = | 140 |
方程左边 = | 117 4 | + | x | × | 11 20 |
117 4 | + | 11 20 | x | = | 140 |
11 20 | x | = | 140 | − | 117 4 |
11 20 | x | = | 443 4 |
x | = | 443 4 | ÷ | 11 20 |
= | 443 4 | × | 20 11 |
= | 443 | × | 5 11 |
x | = | 2215 11 |
x | = | 201.363636 |
75 | × | 9 20 | + | ( | x | × | 11 20 | ) | = | 170 |
方程左边 = | 135 4 | + | ( | x | × | 11 20 | ) |
135 4 | + | ( | x | × | 11 20 | ) | = | 170 |
方程左边 = | 135 4 | + | x | × | 11 20 |
135 4 | + | 11 20 | x | = | 170 |
11 20 | x | = | 170 | − | 135 4 |
11 20 | x | = | 545 4 |
x | = | 545 4 | ÷ | 11 20 |
= | 545 4 | × | 20 11 |
= | 545 | × | 5 11 |
x | = | 2725 11 |
x | = | 247.727273 |
220 | × | 9 20 | + | ( | x | × | 11 20 | ) | = | 170 |
方程左边 = | 99 | + | ( | x | × | 11 20 | ) |
99 | + | ( | x | × | 11 20 | ) | = | 170 |
方程左边 = | 99 | + | x | × | 11 20 |
99 | + | 11 20 | x | = | 170 |
11 20 | x | = | 170 | − | 99 |
11 20 | x | = | 71 |
x | = | 71 | ÷ | 11 20 |
= | 71 | × | 20 11 |
x | = | 1420 11 |
x | = | 129.090909 |