(7+i)-(3-4i)=

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Solution for (7+i)-(3-4i)= equation:


Simplifying
(7 + i) + -1(3 + -4i) = 0

Remove parenthesis around (7 + i)
7 + i + -1(3 + -4i) = 0
7 + i + (3 * -1 + -4i * -1) = 0
7 + i + (-3 + 4i) = 0

Reorder the terms:
7 + -3 + i + 4i = 0

Combine like terms: 7 + -3 = 4
4 + i + 4i = 0

Combine like terms: i + 4i = 5i
4 + 5i = 0

Solving
4 + 5i = 0

Solving for variable 'i'.

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

Add '-4' to each side of the equation.
4 + -4 + 5i = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 5i = 0 + -4
5i = 0 + -4

Combine like terms: 0 + -4 = -4
5i = -4

Divide each side by '5'.
i = -0.8

Simplifying
i = -0.8

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