-21-8=1+6(4-5a)

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Solution for -21-8=1+6(4-5a) equation: 



-21-8=1+6(4-5a)

We move all terms to the left:

-21-8-(1+6(4-5a))=0

We add all the numbers together, and all the variables

-(1+6(-5a+4))-21-8=0

We add all the numbers together, and all the variables

-(1+6(-5a+4))-29=0



We calculate terms in parentheses: -(1+6(-5a+4)), so:

1+6(-5a+4)

determiningTheFunctionDomain
6(-5a+4)+1

We multiply parentheses

-30a+24+1

We add all the numbers together, and all the variables

-30a+25

Back to the equation:

-(-30a+25)



We get rid of parentheses

30a-25-29=0

We add all the numbers together, and all the variables

30a-54=0

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

30a=54

a=54/30

a=1+4/5

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