А10=А1+9d=2+9*(-2)= 2-18=-16
8-12x-5+x>11-x
8-12x-5+x-11+x>0
-14-10x>0
-10x>14
10x<-14
X<14/10
X<7/5
Уже решала
<span>X-4 / x-10 = -2
</span>X-4 = -2 * (x-10)
x-4 = -2*x + 20
3*x = 24
<span>x = 8</span>
-10/3 * 11/3 - 14/3 * 2/3=-110/9-28/9=138/9=15 1/3