(10x+9)x=8-(1-5x)(2x+3)

Question

(10x+9)x=8-(1-5x)(2x+3)

Answer 1

(10х+9)х=8-(1-5х)(2х+3)
10х^2+9х=8-(2х+3-10х^2-15x)
10х^2+9x=8-2x-3+10x^2+15x
10x^2-10x^2+9x+2x-15x=8-3
-4x=5
x=5/-4=-1.25