p+(20-2n)+(11-0.5p)=18

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Solution for p+(20-2n)+(11-0.5p)=18 equation:


Simplifying
p + (20 + -2n) + (11 + -0.5p) = 18

Remove parenthesis around (20 + -2n)
p + 20 + -2n + (11 + -0.5p) = 18

Remove parenthesis around (11 + -0.5p)
p + 20 + -2n + 11 + -0.5p = 18

Reorder the terms:
20 + 11 + -2n + p + -0.5p = 18

Combine like terms: 20 + 11 = 31
31 + -2n + p + -0.5p = 18

Combine like terms: p + -0.5p = 0.5p
31 + -2n + 0.5p = 18

Solving
31 + -2n + 0.5p = 18

Solving for variable 'n'.

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

Add '-31' to each side of the equation.
31 + -2n + -31 + 0.5p = 18 + -31

Reorder the terms:
31 + -31 + -2n + 0.5p = 18 + -31

Combine like terms: 31 + -31 = 0
0 + -2n + 0.5p = 18 + -31
-2n + 0.5p = 18 + -31

Combine like terms: 18 + -31 = -13
-2n + 0.5p = -13

Add '-0.5p' to each side of the equation.
-2n + 0.5p + -0.5p = -13 + -0.5p

Combine like terms: 0.5p + -0.5p = 0.0
-2n + 0.0 = -13 + -0.5p
-2n = -13 + -0.5p

Divide each side by '-2'.
n = 6.5 + 0.25p

Simplifying
n = 6.5 + 0.25p

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