1/3(x+x+1)=7

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Solution for 1/3(x+x+1)=7 equation: 



1/3(x+x+1)=7

We move all terms to the left:

1/3(x+x+1)-(7)=0



Domain of the equation: 3(x+x+1)!=0

x∈R



We add all the numbers together, and all the variables

1/3(2x+1)-7=0

We multiply all the terms by the denominator


-7*3(2x+1)+1=0

Wy multiply elements

-21x(2+1=0

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