Question

(5x-3)(2x+1)-(2x-3)(5x+4)=-3

Answer 1

5х-3•2х+1-2х+3•5х+4=-3
40х+5=-3
40х=-3-5
40х=-8
х=-0,2

Answer 2

(5x-3)(2x+1)-(2x-3)(5x+4)=-3
$(10 x^{2} +5x-6x-3)-(10 x^{2} +8x-15x-12)=3$
$10 x^{2} +5x-6x-3-10 x^{2} -8x+15x+12=-3$
$10 x^{2} +5x-6x-3-10 x^{2} -8x+15x+12+3=0$
6x+12=0
6x=-12
x=-2