1/7(105+r)=30

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Solution for 1/7(105+r)=30 equation: 



1/7(105+r)=30

We move all terms to the left:

1/7(105+r)-(30)=0



Domain of the equation: 7(105+r)!=0

r∈R



We add all the numbers together, and all the variables

1/7(r+105)-30=0

We multiply all the terms by the denominator


-30*7(r+105)+1=0

Wy multiply elements

-210r(r+1=0

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