4(5i-7)=

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Solution for 4(5i-7)= equation: 


Simplifying
4(5i + -7) = 0

Reorder the terms:
4(-7 + 5i) = 0
(-7 * 4 + 5i * 4) = 0
(-28 + 20i) = 0

Solving
-28 + 20i = 0

Solving for variable 'i'.

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

Add '28' to each side of the equation.
-28 + 28 + 20i = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 20i = 0 + 28
20i = 0 + 28

Combine like terms: 0 + 28 = 28
20i = 28

Divide each side by '20'.
i = 1.4

Simplifying
i = 1.4

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