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

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



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

We move all terms to the left:

7a+1-(1-2(5-a))=0

We add all the numbers together, and all the variables

7a-(1-2(-1a+5))+1=0



We calculate terms in parentheses: -(1-2(-1a+5)), so:

1-2(-1a+5)

determiningTheFunctionDomain
-2(-1a+5)+1

We multiply parentheses

2a-10+1

We add all the numbers together, and all the variables

2a-9

Back to the equation:

-(2a-9)



We get rid of parentheses

7a-2a+9+1=0

We add all the numbers together, and all the variables

5a+10=0

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

5a=-10

a=-10/5

a=-2

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