4-7-5=-21+3(3x+21)

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Solution for 4-7-5=-21+3(3x+21) equation: 



4-7-5=-21+3(3x+21)

We move all terms to the left:

4-7-5-(-21+3(3x+21))=0

We add all the numbers together, and all the variables

-(-21+3(3x+21))-8=0



We calculate terms in parentheses: -(-21+3(3x+21)), so:

-21+3(3x+21)

determiningTheFunctionDomain
3(3x+21)-21

We multiply parentheses

9x+63-21

We add all the numbers together, and all the variables

9x+42

Back to the equation:

-(9x+42)



We get rid of parentheses

-9x-42-8=0

We add all the numbers together, and all the variables

-9x-50=0

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

-9x=50

x=50/-9

x=-5+5/9

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