51=n+(n+20)

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Solution for 51=n+(n+20) equation:


Simplifying
51 = n + (n + 20)

Reorder the terms:
51 = n + (20 + n)

Remove parenthesis around (20 + n)
51 = n + 20 + n

Reorder the terms:
51 = 20 + n + n

Combine like terms: n + n = 2n
51 = 20 + 2n

Solving
51 = 20 + 2n

Solving for variable 'n'.

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

Add '-2n' to each side of the equation.
51 + -2n = 20 + 2n + -2n

Combine like terms: 2n + -2n = 0
51 + -2n = 20 + 0
51 + -2n = 20

Add '-51' to each side of the equation.
51 + -51 + -2n = 20 + -51

Combine like terms: 51 + -51 = 0
0 + -2n = 20 + -51
-2n = 20 + -51

Combine like terms: 20 + -51 = -31
-2n = -31

Divide each side by '-2'.
n = 15.5

Simplifying
n = 15.5

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