Y-(-4)=21y

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Solution for Y-(-4)=21y equation: 


Simplifying
Y + -1(-4) = 21y

Multiply -1 * -4
Y + 4 = 21y

Reorder the terms:
4 + Y = 21y

Solving
4 + Y = 21y

Solving for variable 'Y'.

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

Add '-4' to each side of the equation.
4 + -4 + Y = -4 + 21y

Combine like terms: 4 + -4 = 0
0 + Y = -4 + 21y
Y = -4 + 21y

Simplifying
Y = -4 + 21y

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