65 | × | 39 5 | + | 243 20 | x | = | ( | 65 | + | x | ) | × | 199 25 |
方程左边 = | 507 | + | 243 20 | x |
507 | + | 243 20 | x | = | ( | 65 | + | x | ) | × | 199 25 |
方程右边 = | 65 | × | 199 25 | + | x | × | 199 25 |
= | 2587 5 | + | x | × | 199 25 |
507 | + | 243 20 | x | = | 2587 5 | + | 199 25 | x |
243 20 | x | − | 199 25 | x | = | 2587 5 | − | 507 |
419 100 | x | = | 2587 5 | − | 507 |
419 100 | x | = | 52 5 |
x | = | 52 5 | ÷ | 419 100 |
= | 52 5 | × | 100 419 |
= | 52 | × | 20 419 |
x | = | 1040 419 |
x | = | 2.4821 |