( | 217 | + | 743 2 | ) | ÷ | 31 | × | x | + | 303 2 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 124 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 1839 |
方程左边 = | ( | 217 | + | 743 2 | ) | × | 1 31 | x | + | 303 62 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
( | 217 | + | 743 2 | ) | × | 1 31 | x | + | 303 62 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) | = | 1839 |
方程左边 = | 217 | × | 1 31 | x | + | 743 2 | × | 1 31 | x | + | 303 62 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 7 | x | + | 743 62 | x | + | 303 62 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 1177 62 | x | + | 303 62 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 1177 62 | x | + | 303 62 | x | + | 303 62 | × | 15 | + | 4 | ( | x | + | 30 | ) |
= | 1177 62 | x | + | 303 62 | x | + | 4545 62 | + | 4 | ( | x | + | 30 | ) |
= | 740 31 | x | + | 4545 62 | + | 4 | ( | x | + | 30 | ) |
= | 740 31 | x | + | 4545 62 | + | 4 | x | + | 4 | × | 30 |
= | 740 31 | x | + | 4545 62 | + | 4 | x | + | 120 |
= | 864 31 | x | + | 11985 62 |
864 31 | x | + | 11985 62 | = | 1839 |
864 31 | x | = | 1839 | − | 11985 62 |
864 31 | x | = | 102033 62 |
x | = | 102033 62 | ÷ | 864 31 |
= | 102033 62 | × | 31 864 |
= | 3779 2 | × | 1 32 |
x | = | 3779 64 |
x | = | 59.046875 |