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7y - 12 - 3 > 6
7y > 6+ 12 + 3
7y > 21
y > 21/7
y > 3
atau
-|7y - 12| -3 >6
7y - 12 + 3 > -6
7y > -6 + 12 - 3
7y > 3
y > 3/7