\[6,3 \cdot (1,3 + x) = 17,01\]
\[1,3 + x = 17,01\ :6,3\]
\[1,3 + x = 1701\ :630\]
\[1,3 + x = 2,7\]
\[x = 2,7 - 1,3\]
\[x = 1,4.\]