Jawabanmu

Jawaban paling cerdas!
2014-06-03T13:24:58+07:00
180 = 60+6x+4x
120 = 10x
x = 12
pqr = 4 x 12 = 48
1 5 1
2014-06-03T13:27:21+07:00
5x + 4x + 60 = 180
5x + 4x = 180 - 60
8 x = 120
8x:8 =120:8
x = 15
sudut PQR = 4*15 = 60 derajat
Semoga membantu ^^