Answer :

To find the sum of the numbers [tex]$1.29$[/tex], [tex]$38.2$[/tex], and [tex]$4.6$[/tex], let's add them step by step:

1. Start with the first two numbers: [tex]$1.29$[/tex] and [tex]$38.2$[/tex].
- Align the decimal points and add:
[tex]\[
\begin{array}{c}
\phantom{0}1.29 \\
+38.20 \\
\hline
39.49
\end{array}
\][/tex]

2. Now, take the result, [tex]$39.49$[/tex], and add the third number, [tex]$4.6$[/tex].
- Align the decimal points again and add:
[tex]\[
\begin{array}{c}
39.49 \\
+\phantom{0}4.60 \\
\hline
44.09
\end{array}
\][/tex]

Therefore, the sum of [tex]$1.29 + 38.2 + 4.6$[/tex] is [tex]$\boxed{44.09}$[/tex].

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