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8y + 12 - 2y = 12y + 9
6y + 12 = 12y + 9
-6y = -3
y = 2
Semoga dapat membantu :)
kumpulin y sama y angka sama angka oke
8y -2y -12y = 9 -12
-6y = -3
y = -3 / -6 = 1/2
kalau tidak salah