15
Penjelasan dengan langkah-langkah:
1.
a. 4x + 2x = 6x
6x = 90
x = 90/6
x = 15
selebihnya di foto, sorry kalo salah ua
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15
Penjelasan dengan langkah-langkah:
1.
a. 4x + 2x = 6x
6x = 90
x = 90/6
x = 15
selebihnya di foto, sorry kalo salah ua