.2n+a=8(.4n-1)

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Solution for .2n+a=8(.4n-1) equation:


Simplifying
0.2n + a = 8(0.4n + -1)

Reorder the terms:
a + 0.2n = 8(0.4n + -1)

Reorder the terms:
a + 0.2n = 8(-1 + 0.4n)
a + 0.2n = (-1 * 8 + 0.4n * 8)
a + 0.2n = (-8 + 3.2n)

Solving
a + 0.2n = -8 + 3.2n

Solving for variable 'a'.

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

Add '-0.2n' to each side of the equation.
a + 0.2n + -0.2n = -8 + 3.2n + -0.2n

Combine like terms: 0.2n + -0.2n = 0.0
a + 0.0 = -8 + 3.2n + -0.2n
a = -8 + 3.2n + -0.2n

Combine like terms: 3.2n + -0.2n = 3n
a = -8 + 3n

Simplifying
a = -8 + 3n

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