-I+15+3I+15=-4

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Solution for -I+15+3I+15=-4 equation:


Simplifying
-1I + 15 + 3I + 15 = -4

Reorder the terms:
15 + 15 + -1I + 3I = -4

Combine like terms: 15 + 15 = 30
30 + -1I + 3I = -4

Combine like terms: -1I + 3I = 2I
30 + 2I = -4

Solving
30 + 2I = -4

Solving for variable 'I'.

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

Add '-30' to each side of the equation.
30 + -30 + 2I = -4 + -30

Combine like terms: 30 + -30 = 0
0 + 2I = -4 + -30
2I = -4 + -30

Combine like terms: -4 + -30 = -34
2I = -34

Divide each side by '2'.
I = -17

Simplifying
I = -17

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