Final answer:
To simplify the expression -7z + (-4.5) + 2.5z + 6y - 3.5, combine the like terms to get -4.5z + 6y - 8.
Step-by-step explanation:
To find the expressions that are equivalent to -7z + (-4.5) + 2.5z + 6y - 3.5, we can simplify the expression by combining like terms. First, combine the -7z and 2.5z terms to get (-7 + 2.5)z = -4.5z. Then, combine the coefficients of the y terms, which gives us 6y. Next, add the constant terms (-4.5) - 3.5 = -8. Therefore, the simplified expression is -4.5z + 6y - 8.
The expression -7z + (-4.5) + 2.5z + 6y - 3.5 can be simplifed by combining like terms. The like terms here are those involving z, which are -7z and +2.5z. When these two are combined, we get -4.5z. The constants (numbers without variables) -4.5 and -3.5 can also be combined to get -8. Hence, the simplified equivalent expression is -4.5z + 6y - 8.