12.4+15.1n=6.5n-3.4(-3n-4)

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Solution for 12.4+15.1n=6.5n-3.4(-3n-4) equation:


Simplifying
12.4 + 15.1n = 6.5n + -3.4(-3n + -4)

Reorder the terms:
12.4 + 15.1n = 6.5n + -3.4(-4 + -3n)
12.4 + 15.1n = 6.5n + (-4 * -3.4 + -3n * -3.4)
12.4 + 15.1n = 6.5n + (13.6 + 10.2n)

Reorder the terms:
12.4 + 15.1n = 13.6 + 6.5n + 10.2n

Combine like terms: 6.5n + 10.2n = 16.7n
12.4 + 15.1n = 13.6 + 16.7n

Solving
12.4 + 15.1n = 13.6 + 16.7n

Solving for variable 'n'.

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

Add '-16.7n' to each side of the equation.
12.4 + 15.1n + -16.7n = 13.6 + 16.7n + -16.7n

Combine like terms: 15.1n + -16.7n = -1.6n
12.4 + -1.6n = 13.6 + 16.7n + -16.7n

Combine like terms: 16.7n + -16.7n = 0.0
12.4 + -1.6n = 13.6 + 0.0
12.4 + -1.6n = 13.6

Add '-12.4' to each side of the equation.
12.4 + -12.4 + -1.6n = 13.6 + -12.4

Combine like terms: 12.4 + -12.4 = 0.0
0.0 + -1.6n = 13.6 + -12.4
-1.6n = 13.6 + -12.4

Combine like terms: 13.6 + -12.4 = 1.2
-1.6n = 1.2

Divide each side by '-1.6'.
n = -0.75

Simplifying
n = -0.75

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