2(10+n)=18

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Solution for 2(10+n)=18 equation: 


Simplifying
2(10 + n) = 18
(10 * 2 + n * 2) = 18
(20 + 2n) = 18

Solving
20 + 2n = 18

Solving for variable 'n'.

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

Add '-20' to each side of the equation.
20 + -20 + 2n = 18 + -20

Combine like terms: 20 + -20 = 0
0 + 2n = 18 + -20
2n = 18 + -20

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

Divide each side by '2'.
n = -1

Simplifying
n = -1

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