20-40+2x=y

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Solution for 20-40+2x=y equation: 


Simplifying
20 + -40 + 2x = y

Combine like terms: 20 + -40 = -20
-20 + 2x = y

Solving
-20 + 2x = y

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 2x = 20 + y

Combine like terms: -20 + 20 = 0
0 + 2x = 20 + y
2x = 20 + y

Divide each side by '2'.
x = 10 + 0.5y

Simplifying
x = 10 + 0.5y

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