решите уровнения пож:) 4х-9=7х+6         20-6х=12-4х         13х+12=8х-13             10х-9=15+4х             8х-13=20-7х                31-6х=5-20х

3x^{6}+3x^{3}-6>0    Решите неравенство

помогите переделать предложения в КОСВЕННУЮ РЕЧЬ:

write the following sentences in indirect speech:
1. "Take these flowers when you leave home"- said my elder brother to me.
2."Do not speak loudly"- the lady said to the passenger.
3.She said to me,"Did he travel abroad?"
4.They told us,"You are the brightest students they have ever taught"
5.Ann asked her son,"What did the teacher tell you in the lesson?"
6.He said to me,"Are you going to type all the letters?"
7."Which of you can do the assignment?"- the professor asked his students.
8.Our mother said to us,"You will have to take the dog for a walk"
9.A stranger asked,"Do you know where the Bolshoy Theatre is?"
10.Ben^s friend asked him,"Are you keen on playing the guitar?"

Помогите с ОБЖ срочно!!!!!!!!!!!! Почему дорогу разделили на проезжую часть,тротуар и обочину. Как ты думаешь, почему перекресток - это самый опасный участок дороги. Срочно!!!!!!!!!!!

помоготе. Составить равенства из выражений:

500+60+7;                         700+65;

600+70+5;                         605+70;

591-1;                                 764+1.