Question

Afla masurile a doua unghiuri suplementare stiind ca masura unuia este de9 ori mai mare decat masura celuilalt

Answer 1

x=9y$\left \{ {{x+y=180} \atop {x=9y}} \right.$ ⇒ $\left \{ {{10y=180} \atop {x=9y}} \right.$ ⇔$\left \{ {{y=18} \atop {x=162}} \right.$

Answer 2

A+B=180
A=9B

9B+B=180
10B=180
∡B=18°
∡A=162°