70-I=61

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Solution for 70-I=61 equation: 


Simplifying
70 + -1I = 61

Solving
70 + -1I = 61

Solving for variable 'I'.

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

Add '-70' to each side of the equation.
70 + -70 + -1I = 61 + -70

Combine like terms: 70 + -70 = 0
0 + -1I = 61 + -70
-1I = 61 + -70

Combine like terms: 61 + -70 = -9
-1I = -9

Divide each side by '-1'.
I = 9

Simplifying
I = 9

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