Question

1. (x^2+4x)/8 ÷ (x^2-16)/4

2.(4 a^3 b^4 c^2)/(5 m^4 n^3 ) ÷ (2 a^7 b^2 c)/(15 m^5 n^5 )

3.(x-1)/3 ÷ (2x-2)/6

4.(-x+2)/5x + (-5x+2)/5x

5. 21b/(b^2-3b-10) - 15/(b-5)

6. 9n/(x-5) - 30/(x-5)

Answer 1

1:14 ÷ 22= 0,6
2:26÷36=0,7
3:4÷10=0,4
4:7+12=19
5:26-20=6
6:14-35=21