3.5=-0.5(a-8)

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Solution for 3.5=-0.5(a-8) equation: 



3.5=-0.5(a-8)

We move all terms to the left:

3.5-(-0.5(a-8))=0



We calculate terms in parentheses: -(-0.5(a-8)), so:

-0.5(a-8)

We multiply parentheses

-0.5a+4

Back to the equation:

-(-0.5a+4)



We get rid of parentheses

0.5a-4+3.5=0

We add all the numbers together, and all the variables

0.5a-0.5=0

We move all terms containing a to the left, all other terms to the right

0.5a=0.5

a=0.5/0.5

a=1

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