221-y=171

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Solution for 221-y=171 equation: 


Simplifying
221 + -1y = 171

Solving
221 + -1y = 171

Solving for variable 'y'.

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

Add '-221' to each side of the equation.
221 + -221 + -1y = 171 + -221

Combine like terms: 221 + -221 = 0
0 + -1y = 171 + -221
-1y = 171 + -221

Combine like terms: 171 + -221 = -50
-1y = -50

Divide each side by '-1'.
y = 50

Simplifying
y = 50

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