( | 1229 | + | 1229 | × | 29 25 | + | 1200 | ) | × | 23 20 | × | 20 | ÷ | 3 2 | × | 11 5 | x | = | 150000 |
方程左边 = | ( | 1229 | + | 1229 | × | 29 25 | + | 1200 | ) | × | 506 15 | x |
( | 1229 | + | 1229 | × | 29 25 | + | 1200 | ) | × | 506 15 | x | = | 150000 |
方程左边 = | 1229 | × | 506 15 | x | + | 1229 | × | 29 25 | × | 506 15 | x | + | 1200 | × | 506 15 | x |
= | 621874 15 | x | + | 18034346 375 | x | + | 40480 | x |
= | 16253732 125 | x |
16253732 125 | x | = | 150000 |
x | = | 150000 | ÷ | 16253732 125 |
= | 150000 | × | 125 16253732 |
= | 37500 | × | 125 4063433 |
x | = | 4687500 4063433 |
x | = | 1.153581 |