the equation 2x-4-1+x would be the answer
Because 2x+x = 3x and -4-1 = 5, the result would be 3x-5
we know that
The conjugate of a complex number is the number with equal real part and imaginary part equal in magnitude but opposite in sign
so
In this problem we have

the conjugate is equal to--------> 
therefore
<u>the answer is the option</u>
10+3i
Hopefully this helps you !
Multiply the numerator by the numerator (top number).
Multiply the denominator by the denominator (bottom number).
So 3 x 6 = 18
And 5 x 7 = 35
= 18/35