an=550+(-50)(n-1)

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Solution for an=550+(-50)(n-1) equation: 


Simplifying
an = 550 + (-50)(n + -1)

Reorder the terms:
an = 550 + -50(-1 + n)
an = 550 + (-1 * -50 + n * -50)
an = 550 + (50 + -50n)

Combine like terms: 550 + 50 = 600
an = 600 + -50n

Solving
an = 600 + -50n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = 600n-1 + -50

Simplifying
a = 600n-1 + -50

Reorder the terms:
a = -50 + 600n-1

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