21=3+8(x+4)

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Solution for 21=3+8(x+4) equation: 



21=3+8(x+4)

We move all terms to the left:

21-(3+8(x+4))=0



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

3+8(x+4)

determiningTheFunctionDomain
8(x+4)+3

We multiply parentheses

8x+32+3

We add all the numbers together, and all the variables

8x+35

Back to the equation:

-(8x+35)



We get rid of parentheses

-8x-35+21=0

We add all the numbers together, and all the variables

-8x-14=0

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

-8x=14

x=14/-8

x=-1+3/4

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