3.5=y-12

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Solution for 3.5=y-12 equation: 


Simplifying
3.5 = y + -12

Reorder the terms:
3.5 = -12 + y

Solving
3.5 = -12 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
3.5 + -1y = -12 + y + -1y

Combine like terms: y + -1y = 0
3.5 + -1y = -12 + 0
3.5 + -1y = -12

Add '-3.5' to each side of the equation.
3.5 + -3.5 + -1y = -12 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -1y = -12 + -3.5
-1y = -12 + -3.5

Combine like terms: -12 + -3.5 = -15.5
-1y = -15.5

Divide each side by '-1'.
y = 15.5

Simplifying
y = 15.5

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