• a) AB = CD
    5x - 30 = 2x + 15
    5x - 2x = 30 + 15
    3x = 45
    x = 15

    b) <A + <D = 180
    4y + 25 + 3y - 5 = 180
    4y + 3y = 180 - 25 + 5
    7y = 160
    y = 22(6/7)

Pertanyaan Lainnya