I+(-3)=9

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Solution for I+(-3)=9 equation: 


Simplifying
I + (-3) = 9
I + -3 = 9

Reorder the terms:
-3 + I = 9

Solving
-3 + I = 9

Solving for variable 'I'.

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

Add '3' to each side of the equation.
-3 + 3 + I = 9 + 3

Combine like terms: -3 + 3 = 0
0 + I = 9 + 3
I = 9 + 3

Combine like terms: 9 + 3 = 12
I = 12

Simplifying
I = 12

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