Răspuns:
a) unghiul AOB are 180 de grade
x+x+100=180
2x=180-100
2x=80|:2
x=40
x+100=40+100=140
b)102+2x+x=180
102+3x=180
3x=180-102
3x=78|:3
x=26
2x=2•26=42
c)2x+3x+72+x=180
6x+72=180
6x=180-72
6x=108|:6
x=18
2x=18•2=36
3x=3•18=54
d)60+2x+40+2x+x=180
5x+100=180
5x=180-100
5x=80|5
x=16
2x+40=2•16+40=32+40=72
2x=16•2=32
Explicație pas cu pas:
sper ca te am ajutat❤️ spor la teme❤️
