1000=900/(1+r)

Solution for 1000=900/(1+r) equation:

1000=900/(1+r)

We move all terms to the left:

1000-(900/(1+r))=0


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

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

r)!=-1

r!=-1/1

r!=-1

r∈R


We add all the numbers together, and all the variables

-(900/(r+1))+1000=0

We multiply all the terms by the denominator


-(900+1000*(r+1))=0


We calculate terms in parentheses: -(900+1000*(r+1)), so:

900+1000*(r+1)

determiningTheFunctionDomain
1000*(r+1)+900

We multiply parentheses

1000r+1000+900

We add all the numbers together, and all the variables

1000r+1900

Back to the equation:

-(1000r+1900)


We get rid of parentheses

-1000r-1900=0

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

-1000r=1900

r=1900/-1000

r=-1+9/10