Ia+bI=3

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Solution for Ia+bI=3 equation: 


Simplifying
Ia + bI = 3

Solving
aI + bI = 3

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-1bI' to each side of the equation.
aI + bI + -1bI = 3 + -1bI

Combine like terms: bI + -1bI = 0
aI + 0 = 3 + -1bI
aI = 3 + -1bI

Divide each side by 'I'.
a = 3I-1 + -1b

Simplifying
a = 3I-1 + -1b

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