84=123-3j

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Solution for 84=123-3j equation:


Simplifying
84 = 123 + -3j

Solving
84 = 123 + -3j

Solving for variable 'j'.

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

Add '3j' to each side of the equation.
84 + 3j = 123 + -3j + 3j

Combine like terms: -3j + 3j = 0
84 + 3j = 123 + 0
84 + 3j = 123

Add '-84' to each side of the equation.
84 + -84 + 3j = 123 + -84

Combine like terms: 84 + -84 = 0
0 + 3j = 123 + -84
3j = 123 + -84

Combine like terms: 123 + -84 = 39
3j = 39

Divide each side by '3'.
j = 13

Simplifying
j = 13

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