2 | ( | 5 | + | x | + | 22 | ) | = | 50 | + | 20 | + | 212 | − | 2 | x |
Left side of the equation = | 2 | × | 5 | + | 2 | x | + | 2 | × | 22 |
= | 10 | + | 2 | x | + | 44 |
= | 54 | + | 2 | x |
54 | + | 2 | x | = | 50 | + | 20 | + | 212 | − | 2 | x |
Right side of the equation = | 282 | − | 2 | x |
54 | + | 2 | x | = | 282 | − | 2 | x |
2 | x | + | 2 | x | = | 282 | − | 54 |
4 | x | = | 282 | − | 54 |
4 | x | = | 228 |
x | = | 228 | ÷ | 4 |
= | 228 | × | 1 4 |
= | 57 | × | 1 |
x | = | 57 |