4(7+9j)=

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Solution for 4(7+9j)= equation: 


Simplifying
4(7 + 9j) = 0
(7 * 4 + 9j * 4) = 0
(28 + 36j) = 0

Solving
28 + 36j = 0

Solving for variable 'j'.

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

Add '-28' to each side of the equation.
28 + -28 + 36j = 0 + -28

Combine like terms: 28 + -28 = 0
0 + 36j = 0 + -28
36j = 0 + -28

Combine like terms: 0 + -28 = -28
36j = -28

Divide each side by '36'.
j = -0.7777777778

Simplifying
j = -0.7777777778

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