1) 2(11х-5)-17х=55

22х-10-17х=55

22х-17х=55+10

5х=65

х=65:5

х=13

2)5(8х+3)-12=83 

   5(8х+3)=83+12

   8х+3=95:5

   8х=19-3

   8х=16

   х=16:8

   х=2

Verified answer

1) 22x-10-17x=55

5x=65

x=13

2) 40x+15-12=83

40x=80

x=2