Question

simplify.
(4 + 6i) + (-7 + 3i)
write your answer in the form a + bi.

Explanation:

Step1: Combine real - parts

Combine the real parts $4$ and $-7$: $4+( - 7)=4 - 7=-3$.

Step2: Combine imaginary - parts

Combine the imaginary parts $6i$ and $3i$: $6i+3i=(6 + 3)i = 9i$.

Step3: Write in a + bi form

The sum is $-3+9i$.

Answer:

$-3 + 9i$