y-2a=4

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Solution for y-2a=4 equation: 


Simplifying
y + -2a = 4

Reorder the terms:
-2a + y = 4

Solving
-2a + y = 4

Solving for variable 'a'.

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

Add '-1y' to each side of the equation.
-2a + y + -1y = 4 + -1y

Combine like terms: y + -1y = 0
-2a + 0 = 4 + -1y
-2a = 4 + -1y

Divide each side by '-2'.
a = -2 + 0.5y

Simplifying
a = -2 + 0.5y

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