2(9+x)=40

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Solution for 2(9+x)=40 equation: 


Simplifying
2(9 + x) = 40
(9 * 2 + x * 2) = 40
(18 + 2x) = 40

Solving
18 + 2x = 40

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 2x = 40 + -18

Combine like terms: 18 + -18 = 0
0 + 2x = 40 + -18
2x = 40 + -18

Combine like terms: 40 + -18 = 22
2x = 22

Divide each side by '2'.
x = 11

Simplifying
x = 11

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