\[ \begin{array}{c c c c c} \colorbox{cyan}{Length of the second piece} & \text{is} & \colorbox{cyan}{Total length} & \text{minus} & \colorbox{cyan}{the length of the first piece} \\ \text{Length of t...Length of the second pieceisTotal lengthminusthe length of the first pieceLength of the second piece=15−x Thus, the length of the second piece, in terms of the length x of the first piece, Answer: 12 + x is 15 − x. Express the total length of the string as a function of x, where x represents the length of the second piece of string.