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3h + (2h 20m) + 35m = (3+2)h + (20+35)m = 5h + 55m
5h - 3h + 9h = 176 11h = 176 h = 16
No, (5h + 2h^2) is not equivalent to (7h). The expression (5h + 2h^2) contains a term (2h^2), which is a quadratic term, while (7h) is a linear term. Therefore, they represent different mathematical expressions.
h=16
The simplified expression of 10h+6-5h+3 is 5h+9