y-3.5=-21

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Solution for y-3.5=-21 equation: 


Simplifying
y + -3.5 = -21

Reorder the terms:
-3.5 + y = -21

Solving
-3.5 + y = -21

Solving for variable 'y'.

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

Add '3.5' to each side of the equation.
-3.5 + 3.5 + y = -21 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
0.0 + y = -21 + 3.5
y = -21 + 3.5

Combine like terms: -21 + 3.5 = -17.5
y = -17.5

Simplifying
y = -17.5

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