Question

1. find the sum. (8.5b + 7) + (6.25x - 4) + (5.6c + 2)

Explanation:

Step1: Remove parentheses

We have the expression \((8.5b + 7)+(6.25x - 4)+(5.6c + 2)\). Removing the parentheses (since there's a plus sign in front of each parenthesis, the signs inside remain the same), we get \(8.5b + 7+6.25x - 4+5.6c + 2\).

Step2: Combine like terms (constants)

Now, combine the constant terms: \(7-4 + 2\). First, \(7-4=3\), then \(3 + 2 = 5\). The terms with variables (\(8.5b\), \(6.25x\), \(5.6c\)) are already in their simplest form as they have different variables and can't be combined further.

Answer:

\(8.5b + 6.25x + 5.6c + 5\)