Решите уравнения а)8,3х+2х-60,5=300;...

Решите уравнения а)8,3х+2х-60,5=300; б)(1,65-0,3х):0,34=4,5

 

а)10,3х-60,5=300                                      б)4,5*0,34                
      10.3х=300+60,5                                  1,65-0,3х=1,53
    10,3х=360,5                                         0,3х=1,65-1,53
     х=360,5:10,3                                          0,3х=0,12
     х=35                                                        х=0,12:0,3
     Ответ:35                                                 х=0,4
                                                                      Ответ:0,4