an=7+9(n-1)5

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Solution for an=7+9(n-1)5 equation: 


Simplifying
an = 7 + 9(n + -1) * 5

Reorder the terms:
an = 7 + 9(-1 + n) * 5

Reorder the terms for easier multiplication:
an = 7 + 9 * 5(-1 + n)

Multiply 9 * 5
an = 7 + 45(-1 + n)
an = 7 + (-1 * 45 + n * 45)
an = 7 + (-45 + 45n)

Combine like terms: 7 + -45 = -38
an = -38 + 45n

Solving
an = -38 + 45n

Solving for variable 'a'.

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

Divide each side by 'n'.
a = -38n-1 + 45

Simplifying
a = -38n-1 + 45

Reorder the terms:
a = 45 + -38n-1

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