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 \((8.5 - 1.8i) - (-1.3 + 2.7i)\), we first need to rewrite the expression by distributing the negative sign:

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

Now, we can combine the real parts and the imaginary parts separately.

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

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

Putting it all together, the result is:

\[ 9.8 - 4.5i \]

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

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