7/1(105+r)=20

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Solution for 7/1(105+r)=20 equation: 



7/1(105+r)=20

We move all terms to the left:

7/1(105+r)-(20)=0



Domain of the equation: 1(105+r)!=0

r∈R



We add all the numbers together, and all the variables

7/1(r+105)-20=0

We multiply all the terms by the denominator


-20*1(r+105)+7=0

Wy multiply elements

-20r(r+7=0

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