Let's use the variable , x , to represent the length of one pf the pieces.
Then we can write the following expression to represent the length of the other piece (using the description in the problem): 2x + 58
Since the total length of the string was 166 cm, we can write and solve the following equation to determine x x + 2x + 58 = 166
Now combine like terms and use inverse operations to solve:
3x + 58 = 166
3x + 58 -58 = 166 - 58
3x = 108
3x/3 = 108/ 3
x = 36 cm
One piece of the string will be 36 cm long.
The other piece will be 2 • 36 + 58 or 72 + 58 = 130 cm long