Question

Simplify the following expression.
(7.9x+8.9)-(-4.34x+3.31
A.
12.24x+12.21
B.
3.56x+12.21
C.
3.56x+5.59
D.

12.24x+5.59

Answer 1

To simplify the expression \((7.9x + 8.9) - (-4.34x + 3.31)\), follow these steps:

1. Distribute the negative sign across the second part of the expression:
\[
(7.9x + 8.9) + (4.34x - 3.31)
\]

2. Combine the \(x\) terms:
\[
7.9x + 4.34x = 12.24x
\]

3. Combine the constant terms:
\[
8.9 - 3.31 = 5.59
\]

4. Therefore, the simplified expression is:
\[
12.24x + 5.59
\]

The answer is:
**D. \(12.24x + 5.59\)**