Помогите решить Была тема; Совместные действия над алгебраическими дробями Задание ;  Выполните указанные действия ! НУЖНО ВСЕ ПОДРОБНО РАСПИСАТЬ КАК РЕШАЛИ Я ВЫХОЖУ К ДОСКЕ НАДО РЕШИТЬ ЭТИ ПРИМЕРЫ ВСЕГО 7 ПРИМЕРОВ  

Известно, что точка В(m;1,5) принадлежит графику функции   у=-4,5х. Найдите значение m.

ПОЕЗД ПРОШЁЛ 485КМ. ПЕРВЫЕ 2 Ч. ПОЕЗД ШЁЛ СО СОРОСТЬЮ 55КМ/ч апотом со скоростью 75 км/ч. сколько времени поезд затратил на весь путь

Упр. 160. Раскройте скобки, употребляя гла голы в Present Continuous или в Present Simple. I (to read) now. He (to sleep) now. We (to drink) tea now. They (to go) to school now. I (not to sleep) now. She (not to drink) coffee now. I (to read) every day. He (to sleep) every night. We (to drink) tea every morning. They (to go) to school every morning. I (not to sleep) in the daytime. She (not to drink) coffee after lunch. We (not to watch) TV now. They (not to eat) now. My mother (not to work) now. You (to work ) now? He (to play) now? They (to eat) now? Your sister (to rest) now? What you (to do) now? What you (to read) now? What they (to eat) now? What your brother (to drink) now? We (not to watch) TV in the morning. They (not to eat) at the lesson. My mother (not to work) at an office. You (to work) every day? He (to play) in the afternoon? They (to eat) at school? Your sister (to rest) after school? What you (to do) every morning? What you (to read) after dinner? What they (to eat) at breakfast? What your brother (to drink) in the evening?

какое значение имеют грибы в природе?))