Question 1101031
when 19 is reduced by 1/3 of a number,result is 15.
 find number 
:
19 - {{{1/3}}}n = 15
{{{-1/3}}}n = 15 - 19
{{{-1/3}}}n = -4
multiply both sides by -3
n = 12
:
:
Check in original statement
 19 - {{{1/3}}}(12) = 15