Question

1) $frac{2х - 1}{3}$

2) (0, 6 + 2х) · (7х - 2, 8)

3) $frac{7}{х+6}$ = - $frac{7}{6}$

Answer 1

(0,6+2x)(7x-2,8)=4,2x-1,68+14x²-5,6x=14x²-1,4x-1,68

N+6=-6
N=-6-6
N=-12