20=30-5(x+1)

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Solution for 20=30-5(x+1) equation: 



20=30-5(x+1)

We move all terms to the left:

20-(30-5(x+1))=0



We calculate terms in parentheses: -(30-5(x+1)), so:

30-5(x+1)

determiningTheFunctionDomain
-5(x+1)+30

We multiply parentheses

-5x-5+30

We add all the numbers together, and all the variables

-5x+25

Back to the equation:

-(-5x+25)



We get rid of parentheses

5x-25+20=0

We add all the numbers together, and all the variables

5x-5=0

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

5x=5

x=5/5

x=1

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