Resposta :
Resposta: As partes são 2,5m e 7,5m
Explicação passo-a-passo:
x+3x=10
4x=10
x=10/4
x=2,5 (1)
x=3*2,5
x=7,5 (2)
[tex]\Large\boxed{\boxed{\boxed{{Ola\´\ }}}}}[/tex]
▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃▃
[tex]\sf\left \{ {{x + y =10} \atop {x=3y}} \right. \\ \\ \sf3y + y = 10 \\ \sf4y = 10 \\ \sf y = \frac{10}{4} \\ \large\boxed{{\sf \large\boxed{{\sf y = 2,5 \: m{}}}{}}} \\ \\ \\ \sf x = 3y \\ \sf x = 3.2,5 \\ \large\boxed{{\sf \large\boxed{{\sf x = 7,5 \: m{}}}{}}} \\ [/tex]