Solve for X
X=-12+4i
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100\left(\frac{1}{5}+\frac{i}{-5}+\frac{1}{-5i}\right)=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Multiply both numerator and denominator of \frac{1}{5i} by imaginary unit i.
100\left(\frac{1}{5}-\frac{1}{5}i+\frac{1}{-5i}\right)=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Divide i by -5 to get -\frac{1}{5}i.
100\left(\frac{1}{5}-\frac{1}{5}i+\frac{i}{5}\right)=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Multiply both numerator and denominator of \frac{1}{-5i} by imaginary unit i.
100\left(\frac{1}{5}-\frac{1}{5}i+\frac{1}{5}i\right)=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Divide i by 5 to get \frac{1}{5}i.
100\times \frac{1}{5}=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Do the additions in \frac{1}{5}-\frac{1}{5}i+\frac{1}{5}i.
20=\frac{100}{5+5i}+\frac{60+80i}{5-5i}-X
Multiply 100 and \frac{1}{5} to get 20.
20=\frac{100\left(5-5i\right)}{\left(5+5i\right)\left(5-5i\right)}+\frac{60+80i}{5-5i}-X
Multiply both numerator and denominator of \frac{100}{5+5i} by the complex conjugate of the denominator, 5-5i.
20=\frac{500-500i}{50}+\frac{60+80i}{5-5i}-X
Do the multiplications in \frac{100\left(5-5i\right)}{\left(5+5i\right)\left(5-5i\right)}.
20=10-10i+\frac{60+80i}{5-5i}-X
Divide 500-500i by 50 to get 10-10i.
20=10-10i+\frac{\left(60+80i\right)\left(5+5i\right)}{\left(5-5i\right)\left(5+5i\right)}-X
Multiply both numerator and denominator of \frac{60+80i}{5-5i} by the complex conjugate of the denominator, 5+5i.
20=10-10i+\frac{-100+700i}{50}-X
Do the multiplications in \frac{\left(60+80i\right)\left(5+5i\right)}{\left(5-5i\right)\left(5+5i\right)}.
20=10-10i+\left(-2+14i\right)-X
Divide -100+700i by 50 to get -2+14i.
20=-X+8+4i
Do the additions in 10-10i+\left(-2+14i\right).
-X+8+4i=20
Swap sides so that all variable terms are on the left hand side.
-X+4i=20-8
Subtract 8 from both sides.
-X+4i=12
Subtract 8 from 20 to get 12.
-X=12-4i
Subtract 4i from both sides.
X=\frac{12-4i}{-1}
Divide both sides by -1.
X=-12+4i
Divide 12-4i by -1 to get -12+4i.
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