2(5+X)=20

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Solution for 2(5+X)=20 equation: 


Simplifying
2(5 + X) = 20
(5 * 2 + X * 2) = 20
(10 + 2X) = 20

Solving
10 + 2X = 20

Solving for variable 'X'.

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

Add '-10' to each side of the equation.
10 + -10 + 2X = 20 + -10

Combine like terms: 10 + -10 = 0
0 + 2X = 20 + -10
2X = 20 + -10

Combine like terms: 20 + -10 = 10
2X = 10

Divide each side by '2'.
X = 5

Simplifying
X = 5

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