Question

ребят помагите срочно!

Answer 1

1. (-x) ^(-1)=3/5 => - 1/x=3/5 => x=-5/3

2. [(2x^(-1)+1]^(-1)=3/7 =>

1/(2/x +1) = 3/7 =>

x/(2+x) =3/7 =>

7x=6+3x => 4x=6 => x=3/2

3. (3x-2)^(-1)=0,6 =>

1/(3x-2)=0,6 =>

1,8x-1,2=1 => 1,8x=2,2 => x=11/9

4. [3-(3x)^(-1)]^(-1)=(3/4)^-2 =>

1/(3-1/3x)=(4/3)² =>

3x/(9x-1)=16/9 =>

27x=144x-16 => 117x=16 => x=16/117