3 | + | ( | 680 | × | 3 | + | 574 | x | ) | ÷ | 2080 | + | x | = | 21 |
Left side of the equation = | 3 | + | 680 | × | 3 | × | 1 2080 | + | 574 | x | × | 1 2080 | + | x |
= | 3 | + | 51 52 | + | 287 1040 | x | + | x |
= | 207 52 | + | 1327 1040 | x |
207 52 | + | 1327 1040 | x | = | 21 |
1327 1040 | x | = | 21 | − | 207 52 |
1327 1040 | x | = | 885 52 |
x | = | 885 52 | ÷ | 1327 1040 |
= | 885 52 | × | 1040 1327 |
= | 885 | × | 20 1327 |
x | = | 17700 1327 |
x | = | 13.338357 |