17a=3(7-a)-1

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Solution for 17a=3(7-a)-1 equation: 



17a=3(7-a)-1

We move all terms to the left:

17a-(3(7-a)-1)=0

We add all the numbers together, and all the variables

17a-(3(-1a+7)-1)=0



We calculate terms in parentheses: -(3(-1a+7)-1), so:

3(-1a+7)-1

We multiply parentheses

-3a+21-1

We add all the numbers together, and all the variables

-3a+20

Back to the equation:

-(-3a+20)



We get rid of parentheses

17a+3a-20=0

We add all the numbers together, and all the variables

20a-20=0

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

20a=20

a=20/20

a=1

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