.5(n-3)+12=45

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Solution for .5(n-3)+12=45 equation: 


Simplifying
0.5(n + -3) + 12 = 45

Reorder the terms:
0.5(-3 + n) + 12 = 45
(-3 * 0.5 + n * 0.5) + 12 = 45
(-1.5 + 0.5n) + 12 = 45

Reorder the terms:
-1.5 + 12 + 0.5n = 45

Combine like terms: -1.5 + 12 = 10.5
10.5 + 0.5n = 45

Solving
10.5 + 0.5n = 45

Solving for variable 'n'.

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

Add '-10.5' to each side of the equation.
10.5 + -10.5 + 0.5n = 45 + -10.5

Combine like terms: 10.5 + -10.5 = 0.0
0.0 + 0.5n = 45 + -10.5
0.5n = 45 + -10.5

Combine like terms: 45 + -10.5 = 34.5
0.5n = 34.5

Divide each side by '0.5'.
n = 69

Simplifying
n = 69

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