[tex]M+D+A=238 \\
M+35=D-47=A+47 \\
M+35=A+47 \Longrightarrow M=A-12 \\
D-47=A+47 \Longrightarrow D=A+94 \\
Inlocuim: \\
A-12+A+94+A=238 \\
3A+82=238 \\
3A=238-82 \\
3A=156 \\
\boxed{A=52~timbre} \\
M=52-12 \\
\boxed{M=40~timbre} \\
D=52+94 \\
\boxed{D=146~timbre}[/tex]