180° = 2y° + 56°
180° - 56° = 2y°
124° = 2y°
y = 124° ÷ 2
y = 62°
2y° = 4x°
124° = 4x°
x = 124° ÷ 4
x = 31°
(Keterangan : Tidak ada pilihan jawaban yang benar pada soal).
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JAWABAN & PEMBAHASAN
180° = 2y° + 56°
180° - 56° = 2y°
124° = 2y°
y = 124° ÷ 2
y = 62°
2y° = 4x°
124° = 4x°
x = 124° ÷ 4
x = 31°
Maka, nilai x + y = 31° + 62° = 93°
(Keterangan : Tidak ada pilihan jawaban yang benar pada soal).