2w-4=a

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Solution for 2w-4=a equation: 


Simplifying
2w + -4 = a

Reorder the terms:
-4 + 2w = a

Solving
-4 + 2w = a

Solving for variable 'w'.

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

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

Combine like terms: -4 + 4 = 0
0 + 2w = 4 + a
2w = 4 + a

Divide each side by '2'.
w = 2 + 0.5a

Simplifying
w = 2 + 0.5a

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