3 10 | × | 3 | x | + | 1 2 | x | + | 3 5 | ( | 100 | − | 4 | x | ) | = | 45 |
Left side of the equation = | 9 10 | x | + | 1 2 | x | + | 3 5 | ( | 100 | − | 4 | x | ) |
= | 7 5 | x | + | 3 5 | ( | 100 | − | 4 | x | ) |
7 5 | x | + | 3 5 | ( | 100 | − | 4 | x | ) | = | 45 |
Left side of the equation = | 7 5 | x | + | 3 5 | × | 100 | − | 3 5 | × | 4 | x |
= | 7 5 | x | + | 60 | − | 12 5 | x |
= | - | 1 | x | + | 60 |
- | 1 | x | + | 60 | = | 45 |
- | 1 | x | = | 45 | − | 60 |
- | x | = | 45 | − | 60 |
- | x | = | - | 15 |
15 | = | x |
x | = | 15 |