Explanation:
6t-12+15t | 25+15t
21t-12 | 25+15t
21t-12 < 25+15t
hence proved..
Answer:
21t - 12 < 25 + 15t
6( t - 2 ) + 15t < 5 ( 5 + 3t )
6t - 12 + 15t < 25 + 15t
21t - 12 < 25 + 15t.
Hence , Proved.
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