66=2n+9

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Solution for 66=2n+9 equation:


Simplifying
66 = 2n + 9

Reorder the terms:
66 = 9 + 2n

Solving
66 = 9 + 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.
66 + -2n = 9 + 2n + -2n

Combine like terms: 2n + -2n = 0
66 + -2n = 9 + 0
66 + -2n = 9

Add '-66' to each side of the equation.
66 + -66 + -2n = 9 + -66

Combine like terms: 66 + -66 = 0
0 + -2n = 9 + -66
-2n = 9 + -66

Combine like terms: 9 + -66 = -57
-2n = -57

Divide each side by '-2'.
n = 28.5

Simplifying
n = 28.5

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