Х=9
.=3
А=2
С=2
™™™™™™™™™™
2. X=18
X= - 18
5. X= 15
X=-15
9.a = 18
a= - 18
58 - 20 +c = 40
20+c= 40+50
20+c= 90
c = 90-20
c= 70
Х=9
.=3
А=2
С=2
™™™™™™™™™™
2. X=18
X= - 18
5. X= 15
X=-15
9.a = 18
a= - 18
58 - 20 +c = 40
20+c= 40+50
20+c= 90
c = 90-20
c= 70