Question 149307
Is your equation {{{5(1+(r/360)^720)= 12}}}??? You're missing a parenthesis.



{{{5(1+(r/360)^720)= 12}}} Start with the given equation.



{{{1+(r/360)^720= 12/5}}} Divide both sides by 5.



{{{(r/360)^720= 12/5-1}}} Subtract 1 from both sides.



{{{(r/360)^720= 7/5}}} Combine like terms.



{{{r/360= 1.000467}}} Take the 720th root of both sides. 



{{{r=360.16812}}} Multiply both sides by 360.