We are given the equation $\frac{x}{1+i} - \frac{y}{2-i} = \frac{1-5i}{3-2i}$ and we need to solve for $x$ and $y$ such that the real parts and imaginary parts are equal on both sides of the equation.

AlgebraComplex NumbersLinear EquationsSystems of Equations
2025/5/12

1. Problem Description

We are given the equation
x1+iy2i=15i32i\frac{x}{1+i} - \frac{y}{2-i} = \frac{1-5i}{3-2i}
and we need to solve for xx and yy such that the real parts and imaginary parts are equal on both sides of the equation.

2. Solution Steps

First, we simplify the equation by multiplying both sides by (1+i)(2i)(1+i)(2-i)
x(2i)y(1+i)=15i32i(1+i)(2i)x(2-i) - y(1+i) = \frac{1-5i}{3-2i}(1+i)(2-i)
Next, we simplify the complex fraction:
15i32i=15i32i3+2i3+2i=(15i)(3+2i)(32i)(3+2i)=3+2i15i10i294i2=313i+109+4=1313i13=1i\frac{1-5i}{3-2i} = \frac{1-5i}{3-2i} \cdot \frac{3+2i}{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.
So now we have
x(2i)y(1+i)=(1i)(1+i)(2i)=(1i2)(2i)=(1+1)(2i)=2(2i)=42ix(2-i) - y(1+i) = (1-i)(1+i)(2-i) = (1 - i^2)(2-i) = (1+1)(2-i) = 2(2-i) = 4-2i
2xxiyyi=42i2x - xi - y - yi = 4-2i
(2xy)(x+y)i=42i(2x - y) - (x+y)i = 4 - 2i.
Equating the real and imaginary parts we get the following system of equations:
2xy=42x - y = 4
x+y=2x+y = 2
Adding the two equations we get:
3x=63x = 6
x=2x = 2
Substituting x=2x=2 into x+y=2x+y = 2 we have
2+y=22+y = 2
y=0y = 0

3. Final Answer

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