(2+i)-(-7+5i)=

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Solution for (2+i)-(-7+5i)= equation:


Simplifying
(2 + i) + -1(-7 + 5i) = 0

Remove parenthesis around (2 + i)
2 + i + -1(-7 + 5i) = 0
2 + i + (-7 * -1 + 5i * -1) = 0
2 + i + (7 + -5i) = 0

Reorder the terms:
2 + 7 + i + -5i = 0

Combine like terms: 2 + 7 = 9
9 + i + -5i = 0

Combine like terms: i + -5i = -4i
9 + -4i = 0

Solving
9 + -4i = 0

Solving for variable 'i'.

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

Add '-9' to each side of the equation.
9 + -9 + -4i = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -4i = 0 + -9
-4i = 0 + -9

Combine like terms: 0 + -9 = -9
-4i = -9

Divide each side by '-4'.
i = 2.25

Simplifying
i = 2.25

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