N1    13-5х=8-2х                                                          N2            4у+15=6н+17                                                       N3           8с+0.73=4,61-8с                                                        N4                   5х+(3х-7)=9                                                               N5          48=11-(9а+2)                                                 N6            13-(5х+11)=6х                                  N7 (7х+11)-(6х+3)=5                                                  N8              2=(3х-5)-(7-4х)   решите пожалуйста я вас очень прошу, отблагадарю!

Вопрос от посетителя:

                                                N1
   13-5х=8-2х
                                                         N2
           4у+15=6н+17
                                                      N3

          8с+0.73=4,61-8с
                                                       N4

                  5х+(3х-7)=9
                                                              N5

         48=11-(9а+2)
                                                N6
           13-(5х+11)=6х
                                 N7
(7х+11)-(6х+3)=5
                                                 N8
             2=(3х-5)-(7-4х)
  решите пожалуйста я вас очень прошу, отблагадарю!

Илюха отвечает:

13-5х=8-2х
13-8=-2х+5х

3х=5

х=5/3=1 2/3

4у+15=6у+17
4у-6у=17-15

-2у=2

у=2/(-2)

у=-1

 

8с+0.73=4,61-8с
8с+8с=4,61-0,73

16с=3,88

с=3,88/16

с=0,24

 

 

5х+(3х-7)=9

5х+3х-7=9

8х=9-7

х=2/8

х=0,25
                                                            

48=11-(9а+2)
11-9а-2=48

-9а=48-9

а=39/(-9)

а=-4 3/9=-4 1/3                                          

13-(5х+11)=6х
13-5х-11=6х

-5х-6х=-2

х=-2/(-11)

х=2/11

                           
(7х+11)-(6х+3)=5
                                             
2=(3х-5)-(7-4х)

3х-5-7+4х=2

7х=2+12

х=14/7

х=2