A(3)=-7+(n-1)(5)

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Solution for A(3)=-7+(n-1)(5) equation: 


Simplifying
A(3) = -7 + (n + -1)(5)

Reorder the terms for easier multiplication:
3A = -7 + (n + -1)(5)

Reorder the terms:
3A = -7 + (-1 + n)(5)

Reorder the terms for easier multiplication:
3A = -7 + 5(-1 + n)
3A = -7 + (-1 * 5 + n * 5)
3A = -7 + (-5 + 5n)

Combine like terms: -7 + -5 = -12
3A = -12 + 5n

Solving
3A = -12 + 5n

Solving for variable 'A'.

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

Divide each side by '3'.
A = -4 + 1.666666667n

Simplifying
A = -4 + 1.666666667n

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