2Q=20-2[9-Q+Q]

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Solution for 2Q=20-2[9-Q+Q] equation: 


Simplifying
2Q = 20 + -2[9 + -1Q + Q]

Combine like terms: -1Q + Q = 0
2Q = 20 + -2[9 + 0]
2Q = 20 + -2[9]

Multiply -2 * 9
2Q = 20 + -18

Combine like terms: 20 + -18 = 2
2Q = 2

Solving
2Q = 2

Solving for variable 'Q'.

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

Divide each side by '2'.
Q = 1

Simplifying
Q = 1

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