Question

14(2x-3)-5(x+4)=2(3x+5)+5x

Answer 1

14(2х-3)-5(х+4)=2(3х+5)+5х

28х-42-5х+20=6х+10+5х

23х-42+20=11х+10

23х-62=11х+10

23х-11х=10+62

12х=72

х=72:12

х=6

проверим:14(2*6-3)-5(6+4)=2(3*6+5)+5*6 (верно)