Răspuns :
[tex]\mathrm{a+b=60} \\
\mathrm{a:b=2~rest~3 \Longrightarrow a=2b+3} \\
\mathrm{2b+3+b=60} \\
\mathrm{3b=57} \\
\underline{\mathrm{b=19}} \\
\mathrm{a=60-19} \\
\underline{\mathrm{a=41}}[/tex]
[tex]a+b=60\\a:b=2 \ rest \ 3 \to \fbox{a=2b+3}\\********************\\2b+3+b=60\\3b+3=60\\3b=60-3\\3b=57/ :3\\\bold{b=19} \\ \\ a=2*19+3 \\a=38+3\\\bold{a=41}[/tex]