Final answer:
To simplify the expression 8h+(-6.3d)-15+4d-3.3h, combine like terms by adding or subtracting their coefficients of h, d, and constant terms to get 4.7h - 2.3d - 15.
Step-by-step explanation:
To simplify the given expression 8h+(-6.3d)-15+4d-3.3h, we combine like terms. Similar terms can be combined by adding or subtracting their coefficients.
Combining the coefficients of h, we get (8 - 3.3)h = 4.7h. Combining the coefficients of d, we get (-6.3 + 4)d = -2.3d. Finally, combining the constant terms, we have -15.
Therefore, the simplified expression is 4.7h - 2.3d - 15.