[數學]Algebraic fraction(急)

Get your Email.1) 3/x+5/x+3 3+5 ------- + 3 = 8/x + 3 x

2) 5/a-3/a+b 5-3 ------- + b = 2/a + b a
3)1/2y+x+2/x-4y x 2yx^2 4y 8xy^2------- + ----------+ -------- - ----------- 2xy 2xy 2xy 2xy
x + 2yx^2 + 4y - 8xy^2----------------------------------- 2xy

4) 3a/a-b-b/3b-3a 3-b-1/3-3a
2 2/3 – b – 3a
5) y/4x-2y-x/2x-y
y/4x-2y-1/2 –y y/4x -3y -1/2
6) 2-(4-a/6a)
2-4+ a/6a 2 1/6 - 4 - 1 5/6
7) 2x/x(x-1) +5/-3x
2/(x-1) – 5/3x
8) 3-[2x/3(x-y)+3y/x-y]
2x 3y 3 - ---------- - ------- 3(x-y) (x-y) 9(x-y) 2x 9y --------- - ---------- - ---------- 3(x-y) 3(x-y) 3(x-y) 9x-9y 2x 9y --------- - ---------- - ---------- 3(x-y) 3(x-y) 3(x-y) 9x-9y - 2x - 9y ----------------------- 3(x-y) 7x - 18y --------------- 3(x-y) 8) 3-[2x/3(x-y)+3y/x - y] OR 8) 3-[2x/3(x-y)+ 3y/(x-y) ]I am guessing at some of the problems. Please use brackets whenever possible.