You can't simplify that any more.
A over B+ C over B=A+C over B=N
-b/(b-a) ? Multiply both top AND bottom by -1 : +b/(-b+a) which is b/(a-b)
It is (B + b)/3.
b/6
If: b/5+b/3 = 10 then b works out as 18.75
b / a
8/9
b²
the absolute value of a over b is not the invers. it is a posative number of a over b. when you see the absolute value, just change it to a posative number. if it is posative, you have your answer.
b*1/b=1
As A/B=C/D , So B=(A*D)/C
a*(b-c) = a*b - a*c