Question 904591
{{{J=M(1=rt)}}} ...I guess you have {{{(1+rt)}}}, not {{{1=rt}}}

{{{J=M(1+rt)}}}

{{{J/M=1+rt}}}

{{{J/M-1=rt}}}

{{{(J/M-1)/r=t}}}

{{{J/rM-1/r=t}}}