Решить двойной неравенство, плз объясните как решается -1<(1-2x)/4<3

дано:треугольник АВС .угол С =90градусам.СС1-высота .СС1=8 см .ВС-16 см.

НАЙТИ :УГОЛ САВ............ЗАРЕНИЕ СПАСИБО)

сообщение о том как востонавливалась сельское хозяйство ссср в после военые годы(великакя отечественая война)             

Complete using the correct form of the verb in brackets

1. I’d like to see Tom again. It’s a long time since ... (I/saw) him.

2. When ... (she/get) there, ... (Paul/wait) for her. His train ... (arrive) earlier.

3. We were surprised when Jenny and Mary got married last year. They ... (only/know) each other for a few weeks.

4. I wasn’t hungry at lunchtime so I didn’t have anything to eat. ... (I/have) a big breakfast. 5. “I’ve decided to learn a new language?” “Have you? Which language ... (you/learn)?” “Spanish.” “I see. And ... (you/do) a course?” “Yes. I hope ... (I/enjoy) it.

помогите у  3 трактористов  есть брат сергей  а усергея братьев нет.Может ли такое быть?