Respostas

2014-02-06T13:05:13-02:00
2x-40+3x-80=360
5x-120=360
5x=360+120
5x=480
5x=480
x=480/5
x=96

2.x-40
2.96-40
192-40
152

3.x-80
3.96-80
288-80
202

152+b+202=360
304+b=360
b=360-204
b=156 graus
obrigada anjo!!
De Nada Querida.Espero ter ajudado!