Луна притягивается к Земле с силой F=2*10 в 20 степени H. Определите массу луны

36х+19=199 15+(43+х)=68 найди два числа сумма которых равна 350,а разница 44

Ребят помогите составить монолог Give a talk about museums. Remember to say: x why people need museums; x the last time you went to a museum and what you saw there; x what museum you would recommend to tourists of your age who are on their first visit to your city and why. You have to talk for 1.5–2 minutes.

ЗАРАНЕЕ ОГРОМЕННОЕ СПАСИБО

Помогите очень нужно!!!))) Rewrite the sentences. Use the present perfect and FOR or SINCE. 1) They started studying English five years ago. (for) 2) She doesn't do karate any more. She stopped doing it last month. (for) 3) We're in a Maths lesson. It started at ten o'clock. (since) 4) He plays tennis. He started playing it when he was five. (since) заранее спасибо!

(340х+5600у-50):10;раскройте скобки: (83·а+24·в-62·с)·22 ; (5с+8+9у) ·6+3·(4с-2-у)