= 6 + 9 + x + 3 + 7 + 5
= 30 + x
6x = 30 + x
6x - x = 30
5x = 30
x = 6
= ⅚
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Langkah cepat :
Langkah panjang :
= 6 + 9 + x + 3 + 7 + 5
= 30 + x
6x = 30 + x
6x - x = 30
5x = 30
x = 6
= ⅚