Jawabanmu

2014-06-03T17:52:57+07:00
2x + 3x - 5 + 4x + 14 = 180
9x  + 9 = 18-
9x = 180 - 9
x = 171 : 9
x = 19 derajat

2x = 2 . 19 = 38 derajat
3x - 5 = 3 . 19 - 5 = 52 derajat
4x + 14 = 4 . 19 + 14 = 90 derajat
2014-06-03T17:54:21+07:00
2x+3x-5+4x+14=180
9x+9=180
9x=180-9
9x=171
x=19
jadi,besar sudut masing-masing adalah
sudut1=2x
=2(19)
=38°
sudut 2=3x-5
=3(19)-5
=57-5
=52°
sudut 3=4x+14
=4(19)+14
=76+14
=90°