Solving Complex Number Equations: (x + 6i) = (3 - i) + (4 - 2yi)
This article will guide you through solving the complex number equation (x + 6i) = (3 - i) + (4 - 2yi). We will use the properties of complex numbers to isolate the variables x and y.
Understanding Complex Numbers
A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is the imaginary unit, defined as the square root of -1.
Key Properties:
- Equality: Two complex numbers are equal if and only if their real and imaginary parts are equal.
- Addition and Subtraction: Complex numbers are added and subtracted by adding or subtracting their corresponding real and imaginary parts.
Solving the Equation
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Simplify the right-hand side:
(3 - i) + (4 - 2yi) = (3 + 4) + (-1 - 2y)i = 7 - (1 + 2y)i
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Equate real and imaginary parts:
Since the left-hand side is x + 6i and the right-hand side is 7 - (1 + 2y)i, we can equate their real and imaginary parts:
- Real parts: x = 7
- Imaginary parts: 6 = -(1 + 2y)
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Solve for y:
- 6 = -1 - 2y
- 2y = -7
- y = -7/2
Solution
Therefore, the solution to the equation (x + 6i) = (3 - i) + (4 - 2yi) is:
- x = 7
- y = -7/2
This means the equation is satisfied when we substitute these values for x and y.