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maka
<A + <B = 180 derajat
2x - 3 + 3x + 18 = 180
5x + 15 = 180
5x = 180-15
5x = 165
x = 165/5
x = 33
<A maka
2x - 3 = (2 x 33) - 3 = 66 - 3 = 63 derajat (c)
A + B = 180°
2x - 3 + 3x +18 = 180
5x + 15 = 180
5x = 165
x = 165/5
x = 33°
Besar sudut A = 2x - 3
= 2(33) - 3
= 66 - 3
= 63°
jawab : C