Question

ajutorrrrrrr ! Va rog frumos

Answer 1

$\begin{cases}z = x + 20 \\ x + 20 + y = 180 \\ 3x - 8 + z = 180\end{cases} \\ \\3x - 8 + x + 20 = 180 \\ 4x = 168 \\ \bf\underline{\color{aquamarine}x = 42} \\ \implies42 + 20 + y = 180 \\ y = 180 - 62 \\ \bf\underline{\color{aquamarine}y = 118} \\ \implies \: z = 42 + 20 \\ \bf\underline{\color{aquamarine}z = 62}$