an=7+.2(n-1)

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Solution for an=7+.2(n-1) equation: 


Simplifying
an = 7 + 0.2(n + -1)

Reorder the terms:
an = 7 + 0.2(-1 + n)
an = 7 + (-1 * 0.2 + n * 0.2)
an = 7 + (-0.2 + 0.2n)

Combine like terms: 7 + -0.2 = 6.8
an = 6.8 + 0.2n

Solving
an = 6.8 + 0.2n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = 6.8n-1 + 0.2

Simplifying
a = 6.8n-1 + 0.2

Reorder the terms:
a = 0.2 + 6.8n-1

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