14=0.4(20n-7.8)

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Solution for 14=0.4(20n-7.8) equation:


Simplifying
14 = 0.4(20n + -7.8)

Reorder the terms:
14 = 0.4(-7.8 + 20n)
14 = (-7.8 * 0.4 + 20n * 0.4)
14 = (-3.12 + 8n)

Solving
14 = -3.12 + 8n

Solving for variable 'n'.

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

Add '-8n' to each side of the equation.
14 + -8n = -3.12 + 8n + -8n

Combine like terms: 8n + -8n = 0
14 + -8n = -3.12 + 0
14 + -8n = -3.12

Add '-14' to each side of the equation.
14 + -14 + -8n = -3.12 + -14

Combine like terms: 14 + -14 = 0
0 + -8n = -3.12 + -14
-8n = -3.12 + -14

Combine like terms: -3.12 + -14 = -17.12
-8n = -17.12

Divide each side by '-8'.
n = 2.14

Simplifying
n = 2.14

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