Verified Answer :

c5h11no2

First you will want all the j variables on one side, and you'll want to simplify it. Additionally, I like to change subtraction to addition of the opposite.

2.25 + (-11j) + (-7.75) + 1.5j =  0.5j + (-1) 
-5.5 + (-9.5 j) = 0.5j + (-1) 
-5.5 + (-9.5j) + (-0.5j) = -1
-5.5 + (-10j) = -1
-5.5 + 5.5 + (-10j) = -1 + 5.5
-10j = 4.5 
-10j/-10 = 4.5/10
j = -0.45 assuming that 7.75 was added to 1.5 j 

calculista

we have

\(2.25 - 11j - 7.75+ 1.5j = 0.5j - 1\)

Solve for j

Group terms that contain the same variable, and move the constant to the opposite side of the equation

\(2.25 - 11j - 7.75+ 1.5j = 0.5j - 1\\ 11j+0.5j-1.5j=2.25-7.75+1\\ 10j=- 4.5\\\\ j= -\frac{4.5}{10} \\ \\ j=-0.45\)

therefore

the answer is

\(j=-0.45\)

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