Question 356053
three consecutive even integers are x, x+2, x+4.  Their sum is x+x+2+x+4 = 3x+6.
a.  {{{3x+6=156}}},
{{{3x = 150}}},
{{{x = 50}}}.  Therefore the consecutive even integers are 50, 52, 54.
b.  {{{3x+6=258}}},
{{{3x = 252}}},
{{{x = 84}}}.  Therefore the consecutive even integers are 84, 86, 88.
c.  {{{3x+6=-60}}},
{{{3x = -66}}},
{{{x = -22}}}.  Therefore the consecutive even integers are -22, -20, -18.