Calculate the subtraction (8.5−1.8i)−(−1.3+2.7i) . Provide the answer in the form of a+bi .(1 point)

Answer 1

To calculate the expression \((8.5 - 1.8i) - (-1.3 + 2.7i)\), we can start by rewriting the subtraction of the complex numbers:

\[ (8.5 - 1.8i) + (1.3 - 2.7i) \]

Next, we combine the real and imaginary parts:

1. Combine the real parts: \[ 8.5 + 1.3 = 9.8 \]

2. Combine the imaginary parts: \[ -1.8 - 2.7 = -4.5 \]

Putting these together, we have:

\[ 9.8 - 4.5i \]

Thus, the final answer in the form \(a + bi\) is:

\[ \boxed{9.8 - 4.5i} \]