Komplemen dari 5x° adalah 4x°
maka
5x° + 4x° = 90°
9x° = 90°
x = 90° : 9°
x = 10
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Verified answer
Komplemen dari 5x° adalah 4x°
maka
5x° + 4x° = 90°
9x° = 90°
x = 90° : 9°
x = 10