a(7)=a(7-1)+-15

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Solution for a(7)=a(7-1)+-15 equation:


Simplifying
a(7) = a(7 + -1) + -15

Reorder the terms for easier multiplication:
7a = a(7 + -1) + -15

Combine like terms: 7 + -1 = 6
7a = a(6) + -15

Reorder the terms for easier multiplication:
7a = 6a + -15

Reorder the terms:
7a = -15 + 6a

Solving
7a = -15 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
7a + -6a = -15 + 6a + -6a

Combine like terms: 7a + -6a = 1a
1a = -15 + 6a + -6a

Combine like terms: 6a + -6a = 0
1a = -15 + 0
1a = -15

Divide each side by '1'.
a = -15

Simplifying
a = -15

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