Question

70×2÷((40-(180÷(5x-5)+17)×2)×12-4=77÷11

Answer 1

справа скобок меньше , рассмотрим мой вариант скобок

70*2/((40-(180/(5x-5)+17)*2)*12-4)=77/11

140/((40-(180/(5x-5)+17)*2)*12-4)=7

(40-(180/(5x-5)+17)*2)*12-4=140/7

(40-(180/(5x-5)+17)*2)*12-4=20

(40-(180/(5x-5)+17)*2)*12=20+4

(40-(180/(5x-5)+17)*2)*12=24

(40-(180/(5x-5)+17)*2)=24/12

40-(180/(5x-5)+17)*2=2

(180/(5x-5)+17)*2=40-2

(180/(5x-5)+17)*2=38

(180/(5x-5)+17)=38/2

180/(5x-5)+17=19

180/(5x-5)=19-17

180/(5x-5)=2

5х-5=180/2

5х-5=90

5х=90+5

5х=95

х=95/5

х=19