3I-1+I=99

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Solution for 3I-1+I=99 equation: 


Simplifying
3I + -1 + I = 99

Reorder the terms:
-1 + 3I + I = 99

Combine like terms: 3I + I = 4I
-1 + 4I = 99

Solving
-1 + 4I = 99

Solving for variable 'I'.

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

Add '1' to each side of the equation.
-1 + 1 + 4I = 99 + 1

Combine like terms: -1 + 1 = 0
0 + 4I = 99 + 1
4I = 99 + 1

Combine like terms: 99 + 1 = 100
4I = 100

Divide each side by '4'.
I = 25

Simplifying
I = 25

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