jawab yang di lingkari saja ya (pakai cara)

63).
180° = 2x+5 + 3x-10
180° = 5x - 5
185° = 5x
x = 185/5
x = 37° (A)


64).
<ABD = 2x+5
= 2(37) + 5
= 74 +5
= 79° (C)


smg mmbntu ^-^

x= 2x+5+3x-10=180
= 2x+3x+5-10=180
=5x-5=180
=5x=180+5
=×. = 185/5 =37


besar sudut abd =
=2x+5
=2×37+5=79