Tolong jawab yang dilingkari yaa.. makasih

1) (3b - bx) / (cx - 3c)
= b(3-x) / c(x-3)

3) 3/(x+1) + 3/(x-1)
= (3(x-1)+3(x+1)) / (x+1)(x-1)
= (3x-3+3x+3) / (x+1)(x-1)
= 6x / (x²-1)

5) (4a) / 3x - 4/(2x)
= 3x(4) - 2x(4a) / 6x²
= 12x - 8ax / 6x²
= 4x(3-2a) / 6x²

7) 3x/ 2x . (x-4) / 6x
= 3x(x-4) / 12x²
= (x-4) / 4x

9) (x²y³) /3z +(18 xy) /6
6(x²y³) + 3z(18xy) / 18z
(6x²y³+ 54xyz) / 18z