q=2q-20

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Solution for q=2q-20 equation: 


Simplifying
q = 2q + -20

Reorder the terms:
q = -20 + 2q

Solving
q = -20 + 2q

Solving for variable 'q'.

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

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

Combine like terms: q + -2q = -1q
-1q = -20 + 2q + -2q

Combine like terms: 2q + -2q = 0
-1q = -20 + 0
-1q = -20

Divide each side by '-1'.
q = 20

Simplifying
q = 20

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