3-21(1-x)=5+7(x-3)

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Solution for 3-21(1-x)=5+7(x-3) equation: 



3-21(1-x)=5+7(x-3)

We move all terms to the left:

3-21(1-x)-(5+7(x-3))=0

We add all the numbers together, and all the variables

-21(-1x+1)-(5+7(x-3))+3=0

We multiply parentheses

21x-(5+7(x-3))-21+3=0



We calculate terms in parentheses: -(5+7(x-3)), so:

5+7(x-3)

determiningTheFunctionDomain
7(x-3)+5

We multiply parentheses

7x-21+5

We add all the numbers together, and all the variables

7x-16

Back to the equation:

-(7x-16)



We add all the numbers together, and all the variables

21x-(7x-16)-18=0

We get rid of parentheses

21x-7x+16-18=0

We add all the numbers together, and all the variables

14x-2=0

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

14x=2

x=2/14

x=1/7

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