[tex]1)\\-10-h = -6 \ \ |+10\\\\-h = 4\\\\\boxed{h = -4}\\\\\\2)\\-f+9 = 4 \ \ |-9\\\\-f = -5\\\\\boxed{f = 5}[/tex]
[tex]3)\\4-t = -3 \ \ |-4\\\\-t = -7\\\\\boxed{t = 7}[/tex]
[tex]4)\\-r + 3 = -8 \ \ |-3\\\\-r = -11\\\\\boxed{r = 11}[/tex]
[tex]5)\\-x-4 = 7 \ \ |+4\\\\-x = 11 \ \ /:(-1)\\\\\boxed{x = -11}[/tex]
[tex]6)\\3-u = 6 \ \ |-3\\\\-u = 3 \ \ /:(-1)\\\\\boxed{u = -3}[/tex]
[tex]7)\\-y-4 = -2 \ \ |+4\\\\-y = 2 \ \ /:(-1)\\\\\boxed{y = -2}[/tex]
[tex]8)\\-5-b = 10 \ \ |+5\\\\-b = 15 \ \ /:(-1)\\\\\boxed{b = -15}[/tex]
[tex]8)\\-x+7 = 12 \ \ |-7\\\\-x = 8 \ \ /:(-1)\\\\\boxed{x = -8}[/tex]
