Question 382874
Let {{{N}}} be the number,
{{{(2/3)N+13=71}}}
Subtract 13 from both sides. 
{{{(2/3)N+13-13=71-13}}}
{{{(2/3)N+0=58}}}
{{{(2/3)N=58}}}
Multiply both sides by (3/2).
{{{(3/2)(2/3)N=(3/2)58}}}
{{{(6/6)N=87}}}
{{{(1)N=87}}}
{{{highlight(N=87)}}}