Y+x+z=21

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Solution for Y+x+z=21 equation: 


Simplifying
Y + x + z = 21

Solving
Y + x + z = 21

Solving for variable 'Y'.

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

Add '-1x' to each side of the equation.
Y + x + -1x + z = 21 + -1x

Combine like terms: x + -1x = 0
Y + 0 + z = 21 + -1x
Y + z = 21 + -1x

Add '-1z' to each side of the equation.
Y + z + -1z = 21 + -1x + -1z

Combine like terms: z + -1z = 0
Y + 0 = 21 + -1x + -1z
Y = 21 + -1x + -1z

Simplifying
Y = 21 + -1x + -1z

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