Using the following image find QR given RS =6 and QS=7

Given
To find:
The value of QR.
Explanation:
It is given that,
That implies,
[tex]\begin{gathered} QS=QR+RS \\ 7=QR+6 \\ QR=7-6 \\ QR=1 \end{gathered}[/tex]Hence, the answer is QR = 1.