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\left(-y\right)i=6-2i-\left(3+5i\right)
Subtract 3+5i from both sides.
\left(-y\right)i=6-3+\left(-2-5\right)i
Subtract 3+5i from 6-2i by subtracting corresponding real and imaginary parts.
\left(-y\right)i=3-7i
Subtract 3 from 6. Subtract 5 from -2.
-y=\frac{3-7i}{i}
Divide both sides by i.
-y=\frac{\left(3-7i\right)i}{1i^{2}}
Multiply both numerator and denominator of \frac{3-7i}{i} by imaginary unit i.
-y=\frac{\left(3-7i\right)i}{-1}
By definition, i^{2} is -1. Calculate the denominator.
-y=\frac{3i-7i^{2}}{-1}
Multiply 3-7i times i.
-y=\frac{3i-7\left(-1\right)}{-1}
By definition, i^{2} is -1.
-y=\frac{7+3i}{-1}
Do the multiplications in 3i-7\left(-1\right). Reorder the terms.
-y=-7-3i
Divide 7+3i by -1 to get -7-3i.
y=\frac{-7-3i}{-1}
Divide both sides by -1.
y=7+3i
Divide -7-3i by -1 to get 7+3i.