3(1+7j)=

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Solution for 3(1+7j)= equation: 


Simplifying
3(1 + 7j) = 0
(1 * 3 + 7j * 3) = 0
(3 + 21j) = 0

Solving
3 + 21j = 0

Solving for variable 'j'.

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

Add '-3' to each side of the equation.
3 + -3 + 21j = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 21j = 0 + -3
21j = 0 + -3

Combine like terms: 0 + -3 = -3
21j = -3

Divide each side by '21'.
j = -0.1428571429

Simplifying
j = -0.1428571429

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