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2y-1=15
2y=16
y=8
perkalian silang
5 x 3 = 2y - 1
15 = 2y - 1 ⇒ pindah ruas
-2y = -1 - 15
-2y = -16
y = -16/-2
y = 16/2
y = 8
jadi, nilai y yang memenuhi adalah 8
semoga membantu