Final answer:
The expressions that are equivalent to 8.9x+6.2+8.7 are 9x+6+93.9+6.2+8.7x, 3.7+8.9+6.2+8.7+8.96.2+8.7+8.9, and 3.9x+8.7+6.2.
Step-by-step explanation:
The expressions that are equivalent to 8.9x+6.2+8.7 are:
- 9x+6+93.9+6.2+8.7x
- 3.7+8.9+6.2+8.7+8.96.2+8.7+8.9
- 3.9x+8.7+6.2
To determine the equivalence of the expressions, we need to compare the coefficients of 'x' and the constant terms. The given expressions have the same coefficients and constant terms as the original expression, resulting in equivalence.