Question 753294

{{{4a/(2a+6)-(a-1)/(a+3)}}}


{{{4a/2(a+3)-(a-1)/(a+3)}}}


{{{cross(4)2a/cross(2)(a+3)-(a-1)/(a+3)}}}


{{{2a/(a+3)-(a-1)/(a+3)}}}


{{{(2a-(a-1))/(a+3)}}}


{{{(2a-a+1)/(a+3)}}}


{{{(a+1)/(a+3)}}}