2(n-1)=19

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Solution for 2(n-1)=19 equation: 


Simplifying
2(n + -1) = 19

Reorder the terms:
2(-1 + n) = 19
(-1 * 2 + n * 2) = 19
(-2 + 2n) = 19

Solving
-2 + 2n = 19

Solving for variable 'n'.

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

Add '2' to each side of the equation.
-2 + 2 + 2n = 19 + 2

Combine like terms: -2 + 2 = 0
0 + 2n = 19 + 2
2n = 19 + 2

Combine like terms: 19 + 2 = 21
2n = 21

Divide each side by '2'.
n = 10.5

Simplifying
n = 10.5

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