Solve for $x$ and $y$ in the equation $\frac{x}{1+i} - \frac{y}{2-i} = \frac{1-5i}{3-2i}$.

AlgebraComplex NumbersSystems of EquationsLinear Equations
2025/5/10

1. Problem Description

Solve for xx and yy in the equation x1+iy2i=15i32i\frac{x}{1+i} - \frac{y}{2-i} = \frac{1-5i}{3-2i}.

2. Solution Steps

First, let's simplify the equation by rationalizing the denominators:
x1+i=x(1i)(1+i)(1i)=x(1i)1i2=x(1i)1(1)=x(1i)2\frac{x}{1+i} = \frac{x(1-i)}{(1+i)(1-i)} = \frac{x(1-i)}{1 - i^2} = \frac{x(1-i)}{1 - (-1)} = \frac{x(1-i)}{2}
y2i=y(2+i)(2i)(2+i)=y(2+i)4i2=y(2+i)4(1)=y(2+i)5\frac{y}{2-i} = \frac{y(2+i)}{(2-i)(2+i)} = \frac{y(2+i)}{4 - i^2} = \frac{y(2+i)}{4 - (-1)} = \frac{y(2+i)}{5}
15i32i=(15i)(3+2i)(32i)(3+2i)=3+2i15i10i294i2=313i+109+4=1313i13=1i\frac{1-5i}{3-2i} = \frac{(1-5i)(3+2i)}{(3-2i)(3+2i)} = \frac{3 + 2i - 15i - 10i^2}{9 - 4i^2} = \frac{3 - 13i + 10}{9 + 4} = \frac{13 - 13i}{13} = 1 - i
Now we have:
x(1i)2y(2+i)5=1i\frac{x(1-i)}{2} - \frac{y(2+i)}{5} = 1 - i
Multiply both sides by 10:
5x(1i)2y(2+i)=10(1i)5x(1-i) - 2y(2+i) = 10(1-i)
5x5xi4y2yi=1010i5x - 5xi - 4y - 2yi = 10 - 10i
Now, we can group the real and imaginary terms:
(5x4y)+(5x2y)i=1010i(5x - 4y) + (-5x - 2y)i = 10 - 10i
Equating the real and imaginary parts, we have the following system of equations:
5x4y=105x - 4y = 10
5x2y=10-5x - 2y = -10
Adding the two equations, we get:
6y=0-6y = 0
y=0y = 0
Substituting y=0y = 0 into the first equation:
5x4(0)=105x - 4(0) = 10
5x=105x = 10
x=2x = 2

3. Final Answer

x=2x = 2 and y=0y = 0

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