Jawabanmu

2014-02-19T20:27:18+07:00
180drjt = 40 + 3y +2
180-40-2 = 3y
138 = 3y
46 = y
--
180drjt = 75 + 2x + 3
180-75-3 = 2x
102 =2x
51 =x
--
jadi 2x+3y = 2(51) + 3(46)
                = 102 + 138
                = 240derajat
aku harap ini membantu^^
Terima kasih yaa :)
mypleasure^^