Respostas

2014-04-25T22:03:07-03:00
I-65+65=130
II-25+25+20=70
1 1 1
2014-04-25T22:11:13-03:00
I-2x=130
x=130/2
x=65º

||-2x+20=70
2x=70-20
2x=50
x=25º
2 3 2