Solution:
The question is given below as
[tex]x+5.7=6.1[/tex]Collect like term by substracting 5.7 from both sides
[tex]\begin{gathered} x+5.7=6.1 \\ x+5.7-5.7=6.1-5.7 \\ x=0.4 \end{gathered}[/tex]Hence,
the final answer is
[tex]\Rightarrow x=0.4[/tex]