Question 129981
Call the 10's digit {{{a}}}
Call the unit's digit {{{b}}}
{{{a = b + 3}}}
{{{b = a - 3}}}
The number is {{{10a + b}}}
{{{10a + b = 6(a + b) + 8}}}
{{{10a + a - 3 = 6(a + a - 3) + 8}}}
{{{11a - 3 = 12a - 18 + 8}}}
{{{a = 18 - 8 - 3}}}
{{{a = 7}}}
{{{b = a - 3}}}
{{{b = 7 - 3}}}
{{{b = 4}}}
The number is 74
check answer:
{{{10a + b = 6(a + b) + 8}}}
{{{10*7 + 4 = 6(7 + 4) + 8}}}
{{{74 = 66 + 8}}}
{{{74 = 74}}}
OK