623 2 | ÷ | 30 | × | x | + | 255 2 | ÷ | 30 | × | ( | x | + | 15 | ) | + | 90 | ÷ | 30 | × | ( | x | + | 30 | ) | = | 1120 |
方程左边 = | 623 60 | x | + | 17 4 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
623 60 | x | + | 17 4 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) | = | 1120 |
方程左边 = | 623 60 | x | + | 17 4 | x | + | 17 4 | × | 15 | + | 3 | ( | x | + | 30 | ) |
= | 623 60 | x | + | 17 4 | x | + | 255 4 | + | 3 | ( | x | + | 30 | ) |
= | 439 30 | x | + | 255 4 | + | 3 | ( | x | + | 30 | ) |
= | 439 30 | x | + | 255 4 | + | 3 | x | + | 3 | × | 30 |
= | 439 30 | x | + | 255 4 | + | 3 | x | + | 90 |
= | 529 30 | x | + | 615 4 |
529 30 | x | + | 615 4 | = | 1120 |
529 30 | x | = | 1120 | − | 615 4 |
529 30 | x | = | 3865 4 |
x | = | 3865 4 | ÷ | 529 30 |
= | 3865 4 | × | 30 529 |
= | 3865 2 | × | 15 529 |
x | = | 57975 1058 |
x | = | 54.796786 |