21I+21Y=

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Solution for 21I+21Y= equation: 


Simplifying
21I + 21Y = 0

Solving
21I + 21Y = 0

Solving for variable 'I'.

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

Add '-21Y' to each side of the equation.
21I + 21Y + -21Y = 0 + -21Y

Combine like terms: 21Y + -21Y = 0
21I + 0 = 0 + -21Y
21I = 0 + -21Y
Remove the zero:
21I = -21Y

Divide each side by '21'.
I = -1Y

Simplifying
I = -1Y

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