(3х-1)(2х+7)-(х+1)(6х-5)=7

Question

(3х-1)(2х+7)-(х+1)(6х-5)=7

Answer 1

6х²+21х-2х-7-6х²+5х-6х+5=7
18х=2+7
18х=9
х=1/2=0,5

Answer 2

6х^2+21х-2х-7-6х^2-5х+6х-5=7
21х-2х+6х-5х-7-5=7
20х=19
х=19/20