1/3(9-x)+1=-20

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Solution for 1/3(9-x)+1=-20 equation: 



1/3(9-x)+1=-20

We move all terms to the left:

1/3(9-x)+1-(-20)=0



Domain of the equation: 3(9-x)!=0

x∈R



We add all the numbers together, and all the variables

1/3(-1x+9)+1-(-20)=0

We add all the numbers together, and all the variables

1/3(-1x+9)+21=0

We multiply all the terms by the denominator


21*3(-1x+9)+1=0

Wy multiply elements

63x(-+1=0

We use the square of the difference formula

63x(-1=0

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