(4x - 1) + (2x + 7) = 90°
6x + 6 = 90°
6x = 90° - 6
6x = 84°
x = 84°/6
x = 14°.
☑ Jadi, nilai x pada gambar di samping adalah 14° {option a}.
(4×-1) + (2x+7) = 90
4×-1 + 2x+7 = 90
6x+6 = 90
6x = 90 - 6
6x = 84
x = 84/6
x = 14
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(4x - 1) + (2x + 7) = 90°
6x + 6 = 90°
6x = 90° - 6
6x = 84°
x = 84°/6
x = 14°.
☑ Jadi, nilai x pada gambar di samping adalah 14° {option a}.
PENYELESAIAN
(4×-1) + (2x+7) = 90
4×-1 + 2x+7 = 90
6x+6 = 90
6x = 90 - 6
6x = 84
x = 84/6
x = 14