THAT IS NOT CORRECT EQUATION!!!
r/1=r
1-r/1+r=1-r+r=2/3
1=2/3 THAT IS NOT CORRECT
1-r/1+r = 2/3
2 answers
solving for r,,
(1-r)/(1+r) = 2/3
*do cross multiplication: (1+r) is multiplied by 2, then 3 is multiplied by (1-r):
3(1-r) = 2(1+r)
3 - 3r = 2 + 2r
*transpose similar terms to one side of equation (all terms with r on left side, and constants on right side):
-2r - 3r = 2 - 3
-5r = -1
r = 1/5
so there,, :)
(1-r)/(1+r) = 2/3
*do cross multiplication: (1+r) is multiplied by 2, then 3 is multiplied by (1-r):
3(1-r) = 2(1+r)
3 - 3r = 2 + 2r
*transpose similar terms to one side of equation (all terms with r on left side, and constants on right side):
-2r - 3r = 2 - 3
-5r = -1
r = 1/5
so there,, :)