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x + 5x + 3x = 90°
6x + 3x = 90°
9x = 90°
x = 90° ÷ 9
x = 10°
3x + 5x + x = 90°
8x + x = 90°
x = 90°/9
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SOAL 1
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x + 5x + 3x = 90°
6x + 3x = 90°
9x = 90°
x = 90° ÷ 9
x = 10°
___________________________________________
___________________________________________
3x + 5x + x = 90°
8x + x = 90°
9x = 90°
x = 90°/9
x = 10°