Answer:
4-2i
Step-by-step explanation:
Think of the subtraction sign like a negative 1 and multiply both values in the parentheses by -1.
7 + -1(3)+-1(4i) +6i
simplify and make sure to group the correct values with one another
7-3-4i+6i
4-2i
You cannot simplify any further from here.
