-21-18=8+2(3x-7)+4(2x-3)-9(x-1)

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Solution for -21-18=8+2(3x-7)+4(2x-3)-9(x-1) equation: 



-21-18=8+2(3x-7)+4(2x-3)-9(x-1)

We move all terms to the left:

-21-18-(8+2(3x-7)+4(2x-3)-9(x-1))=0

We add all the numbers together, and all the variables

-(8+2(3x-7)+4(2x-3)-9(x-1))-39=0



We calculate terms in parentheses: -(8+2(3x-7)+4(2x-3)-9(x-1)), so:

8+2(3x-7)+4(2x-3)-9(x-1)

determiningTheFunctionDomain
2(3x-7)+4(2x-3)-9(x-1)+8

We multiply parentheses

6x+8x-9x-14-12+9+8

We add all the numbers together, and all the variables

5x-9

Back to the equation:

-(5x-9)



We get rid of parentheses

-5x+9-39=0

We add all the numbers together, and all the variables

-5x-30=0

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

-5x=30

x=30/-5

x=-6

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