y-21=-17

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Solution for y-21=-17 equation: 


Simplifying
y + -21 = -17

Reorder the terms:
-21 + y = -17

Solving
-21 + y = -17

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + y = -17 + 21

Combine like terms: -21 + 21 = 0
0 + y = -17 + 21
y = -17 + 21

Combine like terms: -17 + 21 = 4
y = 4

Simplifying
y = 4

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