220=20-Y

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Solution for 220=20-Y equation:


Simplifying
220 = 20 + -1Y

Solving
220 = 20 + -1Y

Solving for variable 'Y'.

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

Add 'Y' to each side of the equation.
220 + Y = 20 + -1Y + Y

Combine like terms: -1Y + Y = 0
220 + Y = 20 + 0
220 + Y = 20

Add '-220' to each side of the equation.
220 + -220 + Y = 20 + -220

Combine like terms: 220 + -220 = 0
0 + Y = 20 + -220
Y = 20 + -220

Combine like terms: 20 + -220 = -200
Y = -200

Simplifying
Y = -200

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