8 | × | 10 | + | ( | x | − | 10 | ) | x | × | 8 | x | × | 7 10 | = | 164 |
Left side of the equation = | 80 | + | ( | x | − | 10 | ) | x | × | 28 5 | x |
80 | + | ( | x | − | 10 | ) | x | × | 28 5 | x | = | 164 |
Left side of the equation = | 80 | + | x | x | × | 28 5 | x | − | 10 | x | × | 28 5 | x |
= | 80 | + | x | x | × | 28 5 | x | − | 56 | x | x |
80 | + | x | x | × | 28 5 | x | − | 56 | x | x | = | 164 |