Question 269883
{{{x + 2*(x + 1) + 3*(x + 2 ) = 80}}}
distributing, we get
{{{x + 2x + 2 + 3x + 6 = 80}}}
combine like terms, we get
{{{6x + 8 = 80}}}
subtract 8 to get
{{{6x = 72}}}
divide to get
{{{x = 12}}}
the 3 numbers are 12, 13, 14