Jawabanmu

2014-06-04T17:36:28+07:00
180drajat=90+8x-1+4x+7
90=12x+6
12x=84
x=7
sudut A=4x+7=4(7)+7=35
sudutC= 8x-1=8(7)-1=55
2014-06-04T17:38:26+07:00
4x+7+8x-1+90=180
12x-6=90
12x=84
x=84/12
x=7

sdt A=4x+7=4.7+7=28+7=35derajat
sdtC=8x-1=8.7-1=56-1=55derajat