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help pls
1. 4n - 12
2. 3x + y
3. 11a + 6b - 2c
4. 2ttr²h
5. 15mn - 5n + 12

help pls I need your answer ​


Help Pls1 4n 122 3x Y3 11a 6b 2c4 2ttrh5 15mn 5n 12help Pls I Need Your Answer class=