2(n-5)=20

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Solution for 2(n-5)=20 equation: 


Simplifying
2(n + -5) = 20

Reorder the terms:
2(-5 + n) = 20
(-5 * 2 + n * 2) = 20
(-10 + 2n) = 20

Solving
-10 + 2n = 20

Solving for variable 'n'.

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

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

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

Combine like terms: 20 + 10 = 30
2n = 30

Divide each side by '2'.
n = 15

Simplifying
n = 15

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