a(2)=-7+(2-1)(-1)

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Solution for a(2)=-7+(2-1)(-1) equation: 


Simplifying
a(2) = -7 + (2 + -1)(-1)

Reorder the terms for easier multiplication:
2a = -7 + (2 + -1)(-1)

Combine like terms: 2 + -1 = 1
2a = -7 + (1)(-1)

Multiply 1 * -1
2a = -7 + -1

Combine like terms: -7 + -1 = -8
2a = -8

Solving
2a = -8

Solving for variable 'a'.

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

Divide each side by '2'.
a = -4

Simplifying
a = -4

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