a(5)=7-2(5-1)

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Solution for a(5)=7-2(5-1) equation: 


Simplifying
a(5) = 7 + -2(5 + -1)

Reorder the terms for easier multiplication:
5a = 7 + -2(5 + -1)

Combine like terms: 5 + -1 = 4
5a = 7 + -2(4)

Multiply -2 * 4
5a = 7 + -8

Combine like terms: 7 + -8 = -1
5a = -1

Solving
5a = -1

Solving for variable 'a'.

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

Divide each side by '5'.
a = -0.2

Simplifying
a = -0.2

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