Question 81188
:
{{{((a+4b))/3}}} - {{{((a+b))/3}}}
:
Since they are over the same denominator, we can write them like this:
{{{((a+4b) - (a+b))/3}}}
:
Remove the brackets, a is eliminated, cancel 3:
{{{(a + 4b - a - b)/3}}} = {{{(4b - b)/3}}} = {{{(3b)/3}}} = b