Question 186089
Let the youngest child's age be {{{a}}}
Their ages are then:
{{{a}}}, {{{a + 2}}}, {{{a + 4}}},and {{{a + 6}}}
{{{a + a + 2 + a + 4 + a + 6 = 84}}}
{{{4a + 12 = 84}}}
{{{4a = 72}}}
{{{a = 18}}}
{{{a + 2 = 20}}}
{{{a + 4 = 22}}}
{{{a + 6 = 24}}}
Their ages are 18,20,22,and 24